# A football is kicked at ground level with a speed of 30.0 m/s at an angle of 36.0° to the horizontal. How much later does it hit the ground?

87,765 results

**geometry**

Observer on ground is x meters from base of launch pad of rocket, which is at same level as observer. Rocket takes off vertically, observer sees tip at angle q degrees from the horizontal. How far above the ground is the tip of the rocket at that instant? Assume the ground is ...

**Physics**

I have a golf ballthat is hit for 0.20s at an angle to the horizontal and it hits the ground some distance away. Initial speed is 30m/s and angle of projection is 35. Calculate the time between when the ball was hit and when it first touched down. I think it should be 30m/s ...

**physics**

Need help with short projectile motion question a ball is thrown up off the roof of a school at an angle of 55 degrees from the horizontal and at a velocity of 25m/s. how long before it hits the ground if it land 95meters from the base of the building? at what horizontal and ...

**physics**

A projectile is fired with an initial speed of 26.0 m/s at an angle of 30.0 above the horizontal. the object hits the ground 9.00 s later

**Physics**

From the window of a building, a ball is tossed from a height y0 above the ground with an initial velocity of 9.40 m/s and angle of 23.0° below the horizontal. It strikes the ground 5.00 s later. By how much does the ball clear or fall short (vertically) of clearing the ...

**Physics**

From the window of a building, a ball is tossed from a height y0 above the ground with an initial velocity of 9.40 m/s and angle of 23.0° below the horizontal. It strikes the ground 5.00 s later. By how much does the ball clear or fall short (vertically) of clearing the ...

**physics**

I know this has been posted many times but I keep trying and cannot get the right answer, A place kicker must kick a football from a point 39.9 m from a goal. As a result of the kick, the ball must clear the crossbar, which is 3.05 m high. When kicked the ball leaves the ...

**physics**

I know this has been posted many times but I keep trying and cannot get the right answer, A place kicker must kick a football from a point 39.9 m from a goal. As a result of the kick, the ball must clear the crossbar, which is 3.05 m high. When kicked the ball leaves the ...

**math**

A person flying a kite holds the string 4 feet above ground level. The string of the kite is taut and makes an angle of 60° with the horizontal (see the figure). Approximate the height of the kite above level ground if 700 feet of string is payed out. (Round your answer to ...

**True & False explanations Physics**

When a projectile is fired at 45 deg. angle and is in free fall, the only point along the path that the acceleration of the object is zero is the instant when the object is at the highest point of its path. Answer: False Can someone explain how? 2.) An object with acceleration...

**physics**

a ball (mass = 0.250 kg) is kicked off a porch (h = 1.50 m above the ground) with an initial velocity of 17.0 m/s at an unknown angle. what is the initial KE. What is the initial PE. what is the KE and speed of the ball when it is at the top of its ballistic arc (h = 9.50 m). ...

**PHY SCI**

A golfer on a level fairway hits a ball at an angle of 42* to the horizontal that travels 100 yd before striking the ground. He then hits another ball from the same spot with the same speed, but at a different angle. This ball also travels 100 yd. At what angle was the second ...

**Physical science**

A golfer on a level fairway hits a ball at an angle of 42* to the horizontal that travels 100 yd before striking the ground. He then hits another ball from the same spot with the same speed, but at a different angle. This ball also travels 100 yd. At what angle was the second ...

**physics**

A ball player hits a home run, and the baseball just clears a wall 17.3 m high located 131.0 m from home plate. The ball is hit an an angle of 35° to the horizontal, and air resistance is negligible. Assume the ball is hit at a height of 1.0 m above the ground. (a) What is ...

**Physics**

A ball player hits a home run, and the baseball just clears a wall 17.0 m high located 124.0 m from home plate. The ball is hit an an angle of 35° to the horizontal, and air resistance is negligible. Assume the ball is hit at a height of 1.0 m above the ground. (a) What is ...

**Physics**

A ball player hits a home run, and the baseball just clears a wall 17.0 m high located 127.0 m from home plate. The ball is hit an an angle of 35° to the horizontal, and air resistance is negligible. Assume the ball is hit at a height of 1.0 m above the ground. (a) What is ...

**Physics**

A ball player hits a home run, and the baseball just clears a wall 20.6 m high located 132.0 m from home plate. The ball is hit an an angle of 35° to the horizontal, and air resistance is negligible. Assume the ball is hit at a height of 1.1 m above the ground. (a) What is ...

**Physics**

A ball player hits a home run, and the baseball just clears a wall 20.3 m high located 119.0 m from home plate. The ball is hit an an angle of 35° to the horizontal, and air resistance is negligible. Assume the ball is hit at a height of 1.0 m above the ground. (a) What is ...

**Physics**

Two projectiles are launched from ground level at the same angle above the horizontal, and both return to ground level. Projectile A has a launch speed that is twice that of projectile B. (Sketch trajectories of projectiles). Assuming that air resistance is absent, what should...

**Physics**

A 2.98 kg ball is dropped from the roof of a building 158.3 m high. While the ball is falling to Earth, a horizontal wind exerts a constant force of 13.1 N on the ball. A.)How long does it take to hit the ground? The acceleration of gravity is 9.81 m/s^2. Answer in units of s ...

**Physics**

A boy is whirling around a stone tied at the end of a 0.71 m long string at constant angular speed of 4 revolutions per second in a plane perpendicular to the ground. The string breaks when it is making an angle of 54 degrees above the horizontal and the stone is on the way up...

**Pre-Ap Physics**

A rock is projected from the edge of the top of a building with an initial velocity of 16.3 m/s at an angle of 39 ◦ above the horizontal. The rock strikes the ground a horizontal distance of 90 m from the base of the building. The acceleration of gravity is 9.8 m/s 2. ...

**physics - electrostatics**

A charged particle of mass m of 1 kg and charge q = 2 uC is thrown from a horizontal ground at an angle teta = 45 degree with speed 20 m/s. In space a horizontal electric field E = 2 x 10^7 V/m exist. Find the range on horizontal ground of the projectile thrown

**Math**

a punter kicked the football into the air with an upward velocity of 62 ft/s. its height in feet after t seconds is given by the function h = -16t^2 + 62t +2. What is the maximum height the ball reaches? How long will it take the football to reach the maximum height? How long ...

**Physics**

Galileo threw a large rock upward from a tower balcony at an angle of 25.0o above the horizontal with an initial speed of 15 m/s. If the rock hits the ground 3.0 s later, how high above ground was the rock when it left Galileo’s hand?

**physics**

A baseball is hit with a speed of 27.0 at an angle of 48.0. It lands on the flat roof of a 12.0 -tall nearby building.If the ball was hit when it was 1.0 above the ground, what horizontal distance does it travel before it lands on the building?

**physics**

A soccer ball is kicked from the ground with an initial speed of 20.4 m/s at an upward angle of 41.0˚. A player 42.2 m away in the direction of the kick starts running to meet the ball at that instant. What must be his average speed if he is to meet the ball just before ...

**physics**

A soccer ball is kicked from the ground with an initial speed of 18.9 m/s at an upward angle of 47.0˚. A player 54.4 m away in the direction of the kick starts running to meet the ball at that instant. What must be his average speed if he is to meet the ball just before ...

**physics**

A soccer ball is kicked from the ground with an initial speed of 20.0 m/s at an upward angle of 43.7˚. A player 50.3 m away in the direction of the kick starts running to meet the ball at that instant. What must be his average speed if he is to meet the ball just before ...

**physics**

A soccer ball is kicked from the ground with an initial speed of 18.0 m/s at an upward angle of 41.2˚. A player 51.1 m away in the direction of the kick starts running to meet the ball at that instant. What must be his average speed if he is to meet the ball just before ...

**physics**

A soccer ball is kicked from the ground with an initial speed of 19.4 m/s at an upward angle of 49.8˚. A player 48.5 m away in the direction of the kick starts running to meet the ball at that instant. What must be his average speed if he is to meet the ball just before ...

**Physics**

A ball launched from ground level lands 2.7 s later on a level field 50 m away from the launch point. Find the magnitude of the initial velocity vector and the angle it is above the horizontal. (Ignore any effects due to air resistance.) A. Find the magnitude m/s B. Find the ...

**science**

A soccer ball is kicked with an initial speed of 8.4 m/s in a direction 22.0° above the horizontal.Find the magnitude and direction of its velocity at the following times. (Take the +x axis to be parallel to the ground, in the direction that the ball is kicked.)0.250 s after ...

**Physics**

In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 14.8 m/s at an angle of 34.1° above the horizontal. How long does it take for the ball to reach the wall if it is 4.10 m away? How high is the ball when it...

**physics**

In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 15 m/s at an angle of 32° above the horizontal. (a) How long does it take for the ball to reach the wall if it is 4.2 m away? (b) How high is the ball when...

**physics**

In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 17 m/s at an angle of 39 ∘ above the horizontal. How long does it take for the ball to reach the wall if it is 3.8 m away? How high is the ball when it ...

**physical**

baseball is hit with a speed of 30.0 m/s at an angle of 50 It lands on the flat roof of a 10m tall nearby building, If the ball was hit when it was 1.5 m above the ground, what horizontal distance does it travel before it lands on the building?

**Physics**

A baseball is hit with a speed of 29.0{\rm m/s} at an angle of 44.0{\rm ^\circ} . It lands on the flat roof of a 10.0{\rm m} -tall nearby building. If the ball was hit when it was 1.4{\rm m} above the ground, what horizontal distance does it travel before it lands on the ...

**Physics**

A place kicker must kick a football from a point 35.0 m (= 38.3 yd) from the goal, and the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 19.8 m/s at an angle of 45.0o to the horizontal. By how much does the ball ...

**biomechanics**

A Softball is Thrown at an angle of 45 degrees with the horizontal. It leaves the hand 2m above the ground. Its Initial Velocity is 20 m/s . Neglecting all external resistance, how far would it travel ? The point at which it hits the ground is at the same level as the ground ...

**physics**

A Softball is Thrown at an angle of 45 degrees with the horizontal. It leaves the hand 2m above the ground. Its Initial Velocity is 20 m/s . Neglecting all external resistance, how far would it travel ? The point at which it hits the ground is at the same level as the ground ...

**Physics**

A player kicks a football from the ground at an angle of 42 degrees above the horizontal with an initial speed of 23m/s. a. How high will the ball rise? b. How long will it be in the air? c. What will be its range?

**Physics**

A tennis ball of mass 0.0609 kg is served. It strikes the ground with a velocity of 52.5 m/s (117 mi/h) at an angle of 22.0° below the horizontal. Just after the bounce it is moving at 50.5 m/s at an angle of 17.7° above the horizontal. If the interaction with the ground ...

**Physics**

A tennis ball of mass 0.0609 kg is served. It strikes the ground with a velocity of 52.5 m/s (117 mi/h) at an angle of 22.0° below the horizontal. Just after the bounce it is moving at 50.5 m/s at an angle of 17.7° above the horizontal. If the interaction with the ground ...

**Physics**

A tennis ball of mass 0.0609 kg is served. It strikes the ground with a velocity of 52.5 m/s (117 mi/h) at an angle of 22.0° below the horizontal. Just after the bounce it is moving at 50.5 m/s at an angle of 17.7° above the horizontal. If the interaction with the ground ...

**Physics**

In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 25 m/s at an angle of 39 degrees above the horizontal. (a) How long does it take for the ball to reach the wall if it is 3.7 m away? (b) How high is the ...

**Physics**

In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 16 m/s at an angle of 32° above the horizontal. a) How long does it take for the ball to reach the wall if it is 5.2 m away? (b) How high is the ball when ...

**physics**

a stone is dropped from a height of 100 m. How long will it take to hit the ground? with what speed will it hit the ground?

**physics**

A tennis ball of mass 0.057 kg is served. It strikes the ground with a velocity of 54 m/s (120 mph) at an angle of 21° below the horizontal. Just after the bounce it is moving at 51 m/s at an angle of 19° above the horizontal. If the interaction with the ground lasts 0.064 s...

**johnny**

A projectile is launched over level ground at a launch angle of 70o with an initial velocity vo. At some later time while the projectile is on its way to the peak in its trajectory, its velocity vector makes an angle of 50o with respect to the horizontal. What is the magnitude...

**physics**

A projectile is launched over level ground at a launch angle of 70o with an initial velocity vo. At some later time while the projectile is on its way to the peak in its trajectory, its velocity vector makes an angle of 50o with respect to the horizontal. What is the magnitude...

**Physics**

An arrow is shot at ground level with an initial speed of 50.0 m/s at an angle of 25.0° above horizontal. What is its x-coordinate when the arrow is on the way up and its y coordinate is 5.00 m above the ground?

**physics**

A .15kg ball is dropped from a height of 14 m to the ground below, and hits the ground with a speed of 12 m/s. With what speed would the ball have hit the ground if there were no air resistance? How much work does the air resistance do on the ball?

**physics**

A railroad gun of mass M = 2.0 kg fires a shell of mass m =1.0 kg at an angle of theta= 35.0 with respect to the horizontal as measured relative to the gun. After the firing is complete, the final speed of the projectile relative to the gun (muzzle velocity) is v_0 =100.0 m/s...

**Physics**

A golf ball hit at a speed of 77 m/s will carry (achieve its maximum flight distance of) 256 m when driven at a launch angle of 16 deg. What would be its horizontal range in a vacuum if launched at the same speed and at the same angle ?

**Physics**

A gray kangaroo can bound across level ground with each jump carrying it 8.4 from the takeoff point. Typically the kangaroo leaves the ground at a 23 angle. What is its takeoff speed? What is its maximum height above the ground?

**Physics ASAP PLease**

A railroad gun of mass M = 2.0 kg fires a shell of mass m =1.0 kg at an angle of theta= 35.0 with respect to the horizontal as measured relative to the gun. After the firing is complete, the final speed of the projectile relative to the gun (muzzle velocity) is v_0 =100.0 m/s...

**Physics**

A railroad gun of mass M = 3.0 kg fires a shell of mass m=1.0 kg at an angle of θ= 45.0 ∘ with respect to the horizontal as measured relative to the gun. After the firing is complete, the final speed of the projectile relative to the gun (muzzle velocity) is v0=120....

**Physics**

A railroad gun of mass M = 3.0 kg fires a shell of mass m=1.0 kg at an angle of θ= 45.0 ∘ with respect to the horizontal as measured relative to the gun. After the firing is complete, the final speed of the projectile relative to the gun (muzzle velocity) is v0=120....

**Math**

If an object is propelled upward from ground level with initial velocity of 55 feet per second, it's height h in feet t seconds later is given by the equation H=-16t^2+55t. after how many seconds does the object hit ground?

**physics (projectile motion)**

A cow on a trebuchet is catapulted toward a castle wall. The cow is released with an inital velocity of 50 m/s at a 60 degree angle above the horizontal. At its release the cow is 8 m above the ground. The castle wall is 100 m from the trebuchet and the ground level of the ...

**physics (projectile motion)**

A cow on a trebuchet is catapulted toward a castle wall. The cow is released with an inital velocity of 50 m/s at a 60 degree angle above the horizontal. At its release the cow is 8 m above the ground. The castle wall is 100 m from the trebuchet and the ground level of the ...

**PHYSICS**

A boy is whirling around a stone tied at the end of a 0.55 m long string at constant angular speed of 5 revolutions per second in a plane perpendicular to the ground. The string breaks when it is making an angle of 53 degrees above the horizontal and the stone is on the way up...

**Physics**

A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.15 m/s at an angle of 18.5o below the horizontal. It strikes the ground 3.30 s later. How far horizontally from the base of the building does the ball strike the ground? ...

**physics**

A)A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.15 m/s at an angle of 19.0o below the horizontal. It strikes the ground 2.50 s later. How far horizontally from the base of the building does the ball strike the ground? B)...

**physic**

A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.50 m/s at an angle of 15.0° below the horizontal. It strikes the ground 3.00 s later. (a) How far horizontally from the base of the building does the ball strike the ground?(...

**physics**

A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 7.50 m/s at an angle of 18.0° below the horizontal. It strikes the ground 5.00 s later. (a) How far horizontally from the base of the building does the ball strike the ground? ...

**Physics**

A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 9.40 m/s at an angle of 21.0Â° below the horizontal. It strikes the ground 6.00 s later. (a) How far horizontally from the base of the building does the ball strike the ground...

**physics**

A pair of glasses are dropped from the top of a 32.0 m high stadium. A pen is dropped from the same position 2.00 s later. How long does it take for the glasses to hit the ground? How high above the ground is the pen when the glasses hit the ground? (Disregard air resistance)

**physics**

When the Sun is directly overhead, a hawk dives toward the ground with a constant velocity of 5.20 m/s at 51.5° below the horizontal. Calculate the speed of her shadow on the level ground.

**physics**

When the Sun is directly overhead, a hawk dives toward the ground with a constant velocity of 4.45 m/s at 61.5° below the horizontal. Calculate the speed of her shadow on the level ground.

**Physics**

When Babe Ruth hit a homer over the 10m -high right-field fence 110m from home plate, roughly what was the minimum speed of the ball when it left the bat? Assume the ball was hit 1.0m above the ground and its path initially made a 32∘ angle with the ground. I just need ...

**physics**

When the Sun is directly overhead, a hawk dives toward the ground at a speed of 6.97 m/s. If the direction of his motion is at an angle of 34.1 below the horizontal, calculate the speed of his shadow along the ground. Answer in units of m/s

**Physics**

When the Sun is directly overhead, a hawk dives toward the ground at a speed of 6.09 m/s. If the direction of his motion is at an angle of 78.6 â—¦ below the horizontal, calculate the speed of his shadow along the ground. Answer in units of m/s

**physics**

A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. 1) What is the initial speed of the cannonball? 2) What is the initial angle θ of the cannonball with respect to the ground? 3) What is ...

**pyhsics**

A cannonball is shot (from ground level) with an initial horizontal velocity of 36.0 m/s and an initial vertical velocity of 21.0 m/s. 1) What is the initial speed of the cannonball? 2) What is the initial angle θ of the cannonball with respect to the ground? 3) What is ...

**Physics**

A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect to the ground 34.38° What is the ...

**Physics**

A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect to the ground 34.38° What is the ...

**Physics**

A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect to the ground 34.38° What is the ...

**Physics**

A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect to the ground 34.38° What is the ...

**Physics**

A home run is hit such a way that the baseball just clears a wall 19 m high located 149 m from home plate. The ball is hit at an angle of 40◦ to the horizontal, and air resistance is negligible. Assume the ball is hit at a height of 2 m above the ground.The acceleration ...

**Physics**

A home run is hit such a way that the baseball just clears a wall 30 m high located 117 m from home plate. The ball is hit at an angle of 40 degrees to the horizontal, and air resistance is negligible. Assume the ball is hit at a height of 2 m above the ground. The ...

**physics**

a gun,kept on straight horizontal ground is used to hit a car, traveling along the same road away from the gun with a uniform speed of 72km/h.The car is at a distance of 500m from the gun. when the gun is fired at an angle of 45 degrees with the horizontal. find (1) the ...

**physics**

In the figure, a ball is thrown leftward from the left edge of the roof, at height h above the ground. The ball hits the ground 1.52 s. later, at distance d = 30.5 m from the building and at angle θ = 61° with the horizontal.

**Physics**

A football is kicked off with an initial speed of 63 ft/s at a projection angle of 45 degrees. A receiver on the goal line 67 yd away in the direction of the kick starts running to meet the ball at that instant. What must be his minimum speed (in feet/second) if he is to catch...

**Physics Classical Mechanics**

A railroad gun of mass M = 2.0 kg fires a shell of mass m=1.0 kg at an angle of θ= 40.0 ∘ with respect to the horizontal as measured relative to the gun. After the firing is complete, the final speed of the projectile relative to the gun (muzzle velocity) is v0=110....

**physics**

A football is kicked with an initial speed of 18 m/s at an angle of 36 degrees above the horizontal. (a) What is the maximum height that it reaches? (b) At what time does it land? (c) How far horizontally does it travel?

**Physics**

A soccer ball is kicked from the ground at an angle of θ = 41 degrees with respect to the horizontal. The hang time of the ball is tm = 0.9 s. What is the horizontal distance in meters??????

**physics**

a golf ball is observed to hit the ground 800 ft. away after a flight of 5 seconds. Assume that the ground is level and neglect friction of the air. Find the angle of elevation above the ground of the initial motion of the ball, find the initial velocity of the ball, find its ...

**physics**

When the Sun is directly overhead, a hawk dives toward the ground at a speed of 3.07 m/s. If the direction of his motion is at an angle of 57.2 ◦ below the horizontal, calculate the speed of his shadow along the ground. Answer in units of m/s

**Physics**

When the Sun is directly overhead, a hawk dives toward the ground at a speed of 2.18 m/s. If the direction of his motion is at an angle of 25.1◦below the horizontal, calculate the speed of his shadow along the ground. Answer in units of m/s

**physics**

According to the Guinness Book of World Records, the longest home run ever measured was hit by Roy “Dizzy” Carlyle in a minor league game. The ball traveled 188 {\rm m} (618 {\rm ft}) before landing on the ground outside the ballpark part a Assuming the ball's initial ...

**physics**

A home run is hit such a way that the baseball just clears a wall 26 m high located 118 m from home plate. The ball is hit at an angle of 37 ◦ to the horizontal, and air resistance is negligible. Assume the ball is hit at a height of 1 m above the ground. What is the ...

**Physics**

A firefighter 41.8m away from a burning building, directs Zach stream of water from a ground level fire hose at an angle of 33.0 degrees above the horizontal . If the speed of the streams it leaves the hose is 42.7m/s, at what height will the stream of water hit the building

**Math **

In a Canadian Football League game, the path at one particular kick-off can be modelled using tge function h(d)=-0.02d^2+2.6d-66.5,where h is the height of the ball and d is the horizontal distance from the kicking team's goal line,both in yards. A value of h(d)=0 represents ...

**Physics !!**

1) A stone is dropped from the roof of a building; 2.00 s after that, a second stone is thrown straight down with an initial speed of 25 m/s and the two stones land at the same time. i) How long did it take the first stone to reach the ground? ii) How high is the building? iii...

**physics**

a quarterback throws a pass to a receiver. the release point for the football is 1.8 m above the ground. he projects the ball with a speed of 20 m/s at an angle of 40 above the horizontal. If the pass falls incomplete, how long is it in the air? If the pass falls incomplete, ...

**Physics**

A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 7.70 m/s at an angle of 23.0° below the horizontal. It strikes the ground 6.00 s later. (Ignore air resistance.) (a) How far horizontally from the base of the building does the...

**Physics urgent pls!**

A ball is tossed from an upper-storey window of a building.The ball is given an initial velocity of 8 m/s at an angle of 20 degrees below the horizontal.it strikes the ground 3s later .(a) How far horizontally from the base of the building does the ball strike the ground? (b)...

**Physics**

From the window of a building, a ball is tossed from a height y0 above the ground with an initial velocity of 9.40 m/s and angle of 23.0° below the horizontal. It strikes the ground 6.00 s later. Initial velocity components: vx = 8.65 m/s vy = -3.67 m/s (c) Find the equations...