1.A firetruck is traveling at a velocity of +20 m/s in the x direction. As the truck passes x=63m it shoots a tennis ball backwards with a speed of 20 m/s relative to the truck at an angle of 39°
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physics
A firetruck is traveling at a velocity of +20 m/s in the x direction. As the truck passes x=63m it shoots a tennis ball backwards with a speed of 20 m/s relative to the truck at an angle of 39° from a height of 1.4 m. Neglect air resistance. At what x value does the tennis ... 
physics
A firetruck is traveling at a velocity of +20 m/s in the x direction. As the truck passes x=63m it shoots a tennis ball backwards with a speed of 20 m/s relative to the truck at an angle of 39° from a height of 1.4 m. Neglect air resistance. At what x value does the tennis ... 
physics
A firetruck is traveling at a velocity of +20 m/s in the x direction. As the truck passes x=63m it shoots a tennis ball backwards with a speed of 20 m/s relative to the truck at an angle of 39° from a height of 1.4 m. Neglect air resistance. At what x value does the tennis ... 
physics
1.A firetruck is traveling at a velocity of +20 m/s in the x direction. As the truck passes x=63m it shoots a tennis ball backwards with a speed of 20 m/s relative to the truck at an angle of 39° from a height of 1.4 m. Neglect air resistance. At what x value does the tennis ... 
physics
1.A firetruck is traveling at a velocity of +20 m/s in the x direction. As the truck passes x=63m it shoots a tennis ball backwards with a speed of 20 m/s relative to the truck at an angle of 39° from a height of 1.4 m. Neglect air resistance. At what x value does the tennis ... 
physics
A person riding in the back of a pickup truck traveling at 60km/h on a straight, level road throws a ball with a speed of 10km/h relative to the truck in the direction of the truck's motion.What is the velocity of the ball relative to a stationary observer by the side of the ... 
physics
A man is playing tennis and a tennis ball (m=1.2 kg) approaches his tennis racket with a speed of 8.0 m/s. His racket is in contact with the ball for 2.0 ms and sends the ball flying in the opposite direction with a speed of 6.0 m/s. What is the magnitude of the average force ... 
physics
A tennis ball has a velocity of 25 m/s and a mass of 57.5 g. After the ball hits a tennis racket, the velocity becomes twice that of the original speed and goes in the opposite direction. What is the force between the ball and the racket if the time that they interact is 0.07 ... 
physics
A truck is traveling with a uniform velocity 24 m/s, when it passes a car at rest, at this instant the car starts to move and accelerate at the rate of 6m/s^2 in the same direction as the truck. a.) How long will it take the car to overtake the truck b.) How fast will the car ... 
physics
A person riding in the back of a pickup truck traveling at 60km/h on a straight, level road throws a ball with a speed of 10km/h relative to the truck in the direction of the truck's motion. 
momentum/impulse
The following data concerns a tennis ball at a given instant before it is struck by a tennis racket; horizontal momentum of tennis ball= 2.4Ns kinetic energy of ball= 45J a) why is correct to give the direction of the momentum but not the kinetic energy b) write down in terms ... 
physic
A police car is travelling in a straight line with constant speed vp.A truck travelling in the same direction with speed 3/2 vp passes the police car.The truck driver realizes that she is speeding and immediately begins to slow down at a constant rate until she comes to a stop... 
Physics..please help
A car is traveling at 20m/s when it pulls out to pass a truck that is traveling at only 18m/s. The car accelerates at 2.0m/s^2 for 4.0 s and then maintains this new velocity. First it asked me to calculate the distance during acceleration so I used d = (v1)(t)+[(a)(t^2)]/2 and... 
physics
f a 57.0 g tennis ball is traveling horizontally at 72.0 m/s (which does occur), and a 55.0 { kg} tennis player leaps vertically upward and hits the ball, causing it to travel at 48.0 m/s in the reverse direction, how fast will her center of mass be moving horizontally just ... 
physics
f a 57.0 g tennis ball is traveling horizontally at 72.0 m/s (which does occur), and a 55.0 { kg} tennis player leaps vertically upward and hits the ball, causing it to travel at 48.0 m/s in the reverse direction, how fast will her center of mass be moving horizontally just ... 
Physics
You toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of 1.5 m above the ground, and it is moving at a speed of 7.8 m/s. (a) How much time does it take for the tennis ball to reach its maximum height? (b) What is the maximum height above ... 
PHYSICS! PLEASE!
The following data concerns a tennis ball at a given instant before it is struck by a tennis racket; horizontal momentum of tennis ball= 2.4Ns kinetic energy of ball= 45J a) why is correct to give the direction of the momentum but not the kinetic energy b) write down in terms ... 
physics
a tennis player receives a shot with the ball travelling horizontally at 50.0 m/s and returns the shot with the ball traveling horizontally at 40.0 m/s in the opposite direction. what is the impulse delivered to the ball from the tennis racquet? 
PHYSICS HELP!
When a tennis player hits .6kg tennis ball, the racket applies an average force of 250 N to the ball for a time about .15 seconds. Suppsoe that after the colliding, the 1 kg ball was measured to be moving to the left, but onl at 3.25 m/s. What would be the direction and speed ... 
Physics
You are hitting a tennis ball against a wall. The 0.057kg tennis ball traveling at 29 m/s strikes the wall and rebounds at the same speed. Earth is the object of reference. Determine the ball's change in momentum (magnitude). 
PHYSICS HELPPPP!
When a tennis player hits .6kg tennis ball, the racket applies an average force of 250 N to the ball for a time about .15 seconds. Suppsoe that after the colliding, the 1 kg ball was measured to be moving to the left, but onl at 3.25 m/s. What would be the direction and speed ... 
Physics
In a World Cup soccer match, Juan is running due north toward the goal with a speed of 7.70 relative to the ground. A teammate passes the ball to him. The ball has a speed of 13.3 and is moving in a direction of 30.5 east of north, relative to the ground. a) what is the ... 
physics
A 1,225kg car traveling initially with a speed of 25.0 m/s in an easterly direction crashes into the rear end of a 8,500kg truck moving in the same direction at 20.0 m/s. The velocity of the car right after the collision is 18.0 m/s to the east. (a) What is the velocity of ... 
physics
A 95 g tennis ball is traveling at 106 km/h when it bounces of a wall and travels in the opposite direction it came from at a speed of 88 km/h. a. Determine the impulse on the ball if the. (don’t forget that it is a vector) b. If the average force exerted on the ball by the ... 
physics
A 95 g tennis ball is traveling at 106 km/h when it bounces of a wall and travels in the opposite direction it came from at a speed of 88 km/h. a. Determine the impulse on the ball if the. (don’t forget that it is a vector) b. If the average force exerted on the ball by the ... 
Physics ~IMPULSE~
a) A tennis racket a 450 N force on a 0.05 kg tennis ball over a 0.006 s time period. What is the impulse applied to the ball? b) A ball (0.5 kg) is thrown with a velocity of 15 m/s. A receiver catches the ball and brings it to rest is 0.02 s. a) What is the change in momentum... 
UPhys
A 0.060kg tennis ball, moving with a speed of 5.8m/s, has a headon collision with a 0.10kg ball initially moving in the same direction at a speed of 2.8m/s. Assuming a perfectly elastic collision, determine the speed of each ball after the collision. Determine the direction ... 
physics
while standing on an open truck moving at a velocity of 35m/s, a man sees a duck flying diresctly overhead. The man shoots an arrow at the duck and misses it.. the arrow leaves the bow at a vertical velocity of 98m/s. the truck accelerates to a constant speed of 40m/s in the ... 
physics
A car with a mass of 980 kg is initially traveling east toward an intersection with a speed of vc = 18.9 m/s and a 1500 kg pickup is traveling north toward the same intersection. The car and truck collide at the intersection and stick together. After the collision, the ... 
physics
A tennis ball with a speed of 6.0 m/s is thrown perpendicularly at a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 4.0 m/s. If the ball is in contact with the wall for 0.012 s, what is the average acceleration of the ball while it ... 
physics
A person is riding on a flatcar traveling at a constant speed v1= 15 m/s with respect to the ground. He wishes to throw a ball through a stationary hoop in such a manner that the ball will move horizontally as it passes through the hoop. The hoop is at a height h=4 m above his... 
Physics Part 1
Rick is playing billiards and hits the cue ball. It makes contact with the 8 ball head on. If before the collision the cue ball was travelling at 2.4 m/s and after the collision the 8 ball was traveling at 2.13 m/s. How fast and in what direction is the cue ball traveling? (... 
physics
A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 56.0 m/s and returns the shot with the ball traveling horizontally at 44.0 m/s in the opposite direction. What is the impulse delivered to the ball by the racket? 
physics
1) a force of 10 N acts on a 5.0 kg object, initially at rest, for 2.5 s. What is the final speed of the object? 2) a 1500 kh car, is allowed to coast along a level track at a speed of 8.0 m/s. It collides and couples with a 2000kg truck , initially at rest with brakes ... 
physics
In a World Cup soccer match, Juan is running due north toward the goal with a speed of 7.80 m/s relative to the ground. A teammate passes the ball to him. The ball has a speed of 13.6 m/s and is moving in a direction of 32.5 degrees east of north, relative to the ground. a)... 
Physics
A 0.3 kg tennis ball is travelling west with a speed of 4 m/s and bounces off a wall. After bouncing, the ball is travelling east at 2 m/s. The tennis ball was in contact with the wall for 0.004 seconds. a) What is the initial and final momentum of the ball? b) What is the ... 
Physics
A 0.3 kg tennis ball is travelling west with a speed of 4 m/s and bounces off a wall. After bouncing, the ball is travelling east at 2 m/s. The tennis ball was in contact with the wall for 0.004 seconds. a) What is the initial and final momentum of the ball? b) What is the ... 
physics
A ping pong ball (m= 6g) bounces off a table. Before striking the table the ball has a velocity of 4m/s in a direction pheta below the xaxis. It leaves the table with the same speed moving in a direction pheta above the x axis. What impulse does the table exert on the tennis ... 
Physics
I've been stuck on this questions for 2 days A 7.2kg bowling ball traveling at a speed of 3.5 m/s collides with a 1.2kg bowling pin at rest. After the collision, the pin moves with a speed of 3.0 m/s at an angle of 60° with respect to the original direction of motion of the... 
physics
A ball in tennis is lofted with an initial speed of 15m/s, at and angle of 50 degrees above the horizonal. At this instant, the opponent is 10m away from the ball. He begins moving backwards 0.3s later, hoping to reach the ball and hit it back at the moment it is 2.10m above ... 
Physics
A tennis ball with a velocity of 24.4 m/s is thrown perpendicularly at a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 16 m/s. If the ball is in contact with the wall for 0.013 s, what is the average acceleration of the ball while ... 
Physics
At what speed would a 1140kg car have the same momentum as a 12,600kg truck traveling at 25 km/hr? The hint given to this problem is that I need to find the velocity of the car and truck. Converting 25 km/hr to m/s I get 6.944 m/s as the initial velocity.. The professor told... 
physics
a .50 kg ball traveling at 6.0 m/s collides head on with a 1.0 kg ball moving in the opposite direction at a velocity of 12.0 m/s. The .50 kg ball moves away at 14 m/s after the collision. Find the velocity of the second ball. 
physics
A delivery truck with a mass of 1700 kg is stopped in the street w/o its brakes on, when a small car hits it from behind. The car has a mass of 650 kg, and is traveling at 3.7m/s immediately before it hits the truck. Both the car and the truck have good bumpers, so assume the ... 
physics
A 0.68 kg ball traveling at 8.30 m/s collides headon with a 1.32 kg ball moving in the opposite direction at a velocity of 8.85 m/s. The first ball moves away at 6.28 m/s after the collision. Find the velocity of the second ball. 
physics
At car (1140kg)traveling at 76.04 m/s and truck (12600kg)traveling 6.88 m/s have a headon collision and then stick together. What is their final common velocity (m/s)? (assume the car is going in the positive direction) What is the cars' change in momentum in the above ... 
physics
a tennis player swings her 1000g racket with a speed of 6.00 m/s. she hits a 60g tennis ball that was approaching her at a speed of 18.0 m/s . the ball rebounds at 43.0 m/s. a)how fast is her racket moving immediately after the impact? you can ignor the interaction of the ... 
Physics
At the instant the traffic light turns green, an automobile that has been waiting at an intersection starts ahead with a constant acceleration of 2.50 . At the same instant, a truck, traveling with a constant speed of 15.4 , overtakes and passes the automobile. How far beyond ... 
physics
A tennis ball with a speed of 12.5 m/s is moving perpendicular to a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 11.4 m/s. If the ball is in contact with the wall for 0.0139 s, what is the average acceleration of the ball while it ... 
physics
A 10,000kg truck traveling 5m/s collides with a 1,500 kg Volkswagen traveling in the opposite direction at 14 m/s after the collision the truck and Volkswagen stick together. A) what is the final speed and direction of the mess immediately after the collision? (don't foget to ... 
Physics
A tennis ball with a speed of 14m/s is moving perpendicular to a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 11.41m/s. If the ball is in contact with the wall for 0.0112s, what is the average acceleration of the ball while it is ... 
physic
1. A 57 g tennis ball is moving to the left at 36.2 m/s. It collides with a wall and rebounds to the right. The tennis ball is in contact with the wall for 0.107 s and it loses 14% of its kinetic energy during the impact. What is the average force (magnitude & direction) ... 
algebra
Truck A leaves a truck stop traveling at 80 km/hr. Four hours later, truck BB leaves the same truck stop traveling in the same direction at 90 km/ hr. How long does it take truck B to catch up to truck A? 
Physics
A billiard ball with mass 0.210 kg has a speed of 5.2 m/s and collides completely inelastically with another ball of the same size and mass. I understood the first part of the problem I just need help solving the second part. Another billiard ball traveling at 6.25 m/s ... 
Physics
A tennis ball initially moves with a velocity of 27.0 m/s horizontally to the right. A tennis racket strikes the ball, giving it a velocity of 27.0 m/s to the left. Treat the collision as elastic and the ball and racket as particles of mass 0.0580 kg and 0.272 kg respectively... 
Physics
A 7.50 kg bowling ball strikes a stationary 4.50 kg bowling ball. After the collision, the 4.50 kg ball is traveling 8.50 m/s 30.0° east of north; the 7.50 kg ball is traveling 6.50 m/s 20.0° south of east. What was the initial velocity (magnitude and direction) of the 7.50 ... 
Physics
At the instant a traffic light turns green, an automobile that has been waiting at an intersection starts moving forward with a constant acceleration of 2.00m/s(squared). At the same time a truck traveling with a constant speed of 18m/s, overtakes and passes the automobile. 1.... 
physics
A 4.4kg ball with a velocity of 4.6m/s in the +xdirection collides headon elastically with a stationary 2.1kg ball. Part A What is the speed of the first ball after the collision? Part B What is the direction of the velocity of the first ball after the collision? What is the... 
math
A 1000·kg car traveling with a velocity of 13·m/s north collides headon with a 2000·kg truck traveling with a velocity of 17·m/s south. Immediately after the collision, the velocity of the car is 11·m/s south. Taking north as the positive direction, what is the velocity ... 
Physics
At the instant the traffic light turns green, a car that has been waiting at an intersection starts ahead with a constant acceleration of 2.85m/s^2. At the same instant a truck, traveling with a constant speed of 19.0m/s, overtakes and passes the car. A) How far beyond its ... 
Physics
4. A football player passes the ball. The ball leaves his hand and is caught 1.7 seconds later by a receiver 30 meters away. (You may assume the ball was caught at the same height from which it was thrown.) a) What is the vertical component of the velocity of the ball just ... 
Physics
You toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of 1.5 m above the ground, and it is moving at a speed of 8.0 m/s. (a) How much time does it take for the tennis ball to reach its maximum height? (b) What is the maximum height above ... 
Physics
As a baseball is being caught, its speed goes from 27.5 m/s to 0.0 m/s in about 0.0050 s. The mass of the baseball is 0.150 kg. (a) What is the baseball's acceleration? 5500 m/s^2 (b) What are the magnitude and direction of the force acting on it? and is it in opposite in ... 
Physics
At the instant a traffic light turns green, an automobile that has been waiting at an intersection starts moving forward with a constant acceleration of 2.00m/s(squared). At the same time a truck traveling with a constant speed of 18m/s, overtakes and passes the automobile. 1.... 
physics
I have been stuck on this for a while now and cant figure out what it is i am doing wrong HELP!!! A tennis ball with a velocity of 15.5 m/s is thrown perpendicularly at a wall. After strik ing the wall, the ball rebounds in the opposite direction with a speed of 9.3 m/s. If ... 
Physics
question 1 ..A 5 kg rock is thrown vertically upward at 12 m/s. How high did the rock rise? question 2 The driver of a truck traveling at 126 km/h on a highway sees a sign which indicated that 800 m after the sign the maximum speed will be 90 km/h . When the truck passes the ... 
physics
A blue ball is dropped from a height of 3.8 m above a classroom floor while a red ball held at the same height is thrown horizontally with a speed of 5 m/sec. Find The initial velocity and acceleration of each ball (the positive xdirection is the direction the ball is thrown ... 
Physics
You toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of 1.3 m above the ground, and it is moving at a speed of 7.4 m/s. (a) How much time does it take for the tennis ball to reach its maximum height? (b) What is the maximum height above ... 
physics
A tennis ball with a velocity of +9.6 m/s to the right is thrown perpendicularly at a wall. After striking the wall, the ball rebounds in the opposite direction with a velocity of 5.8 m/s (to the left). If the ball is in contact with the wall for 0.013 s, what is the average ... 
physics
A tennis ball with a velocity of 30.0 m/s to the right is thrown perpendicularly at a wall. After striking the wall, the ball rebounds in the opposite direction with a velocity of 8 m/s to the left. If the ball is in contact with the wall for 0.010 s, what is the average ... 
physics
At the instant the traffic light turns green, an automobile that has been waiting at an intersection starts ahead with a constant acceleration of 2.10m/s2 . At the same instant, a truck, traveling with a constant speed of 15.1m/s , overtakes and passes the automobile. How far ... 
AP Physics Impulse
A tennis ball traveling at 25 m/s has a mass of 58.5 g and bounces off a wall with a speed of 22.5 m/s. The impact took 3.33 ms. What is the magnitude of the average force exerted by the wall on the tennis ball? I want to solve for acceleration to plug into F = ma, but the ... 
Physics  Please Check Answers ASAP
Please check these over and see if any are incorrect? 1. The units of speed are: a) m/s > my answer b) m/s^2 and direction c) N d) m/s and direction 2. Which of Newton's Laws says you cannot touch anything without being touched? a) 4th b) 2nd c) 1st d) 3rd > my ... 
physics
A 0.060 kg tennis ball, moving with a speed 2.50 m/s, collides head on with a 0.090kg ball initially moving away from it at a speed of 1.15 m/s. Assuming a perfectly elastic collision, what are the speed and direction of each ball after the collision? 
Physics
A tennis ball of mass 58g is thrown 5m into the air before served. Calculate the velocity of the tennis ball just before it is hit with the tennis racket. 
physics
The firetruck goes around a 180°, 162 m radius circular curve. It enters the curve with a speed of 12.6 m/s and leaves the curve with a speed of 38.8 m/s. Assuming the speed changes at a constant rate, what is the magnitude of the total acceleration of the firetruck just ... 
physics
A sports car, traveling 30 m/s, is 220 meters behind a truck. If the truck is traveling 22 m/s, how much time until the sports car passes the truck. 
MATH214
A tennis ball can in the shape of a cylinder holds three tennis balls snugly. If the radius of a tennis ball is 3.5 cm, what percentage of the tennis ball can is occupied by air? 
Physics
I need help setting up this problem. A tennis player serves a tennis ball such that it is moving horizontally when it leaves the racquet. When the ball travels a horizontal distance of 19 m, it has dropped 58 cm from its original height when it left the racquet. What was the ... 
Physics
I need help setting up this problem. A tennis player serves a tennis ball such that it is moving horizontally when it leaves the racquet. When the ball travels a horizontal distance of 19 m, it has dropped 58 cm from its original height when it left the racquet. What was the ... 
physics
A tennis ball is dropped from the top of a building. It falls for 2.5 seconds before it hits the ground. (a) What velocity is the tennis ball traveling right before it hits the ground? (b) How high is the building? 
Physics
a tennis ball has mass 0.045 kg and is hit at a speed of 120 km/h by the server. the opposing player hits the ball exactly back along the line of its trajectory giving the ball a new speed of 115 km/h. if the contact time between the racquet and the ball is 0.02s what is the ... 
physics
A 4000 kg truck traveling at constant velocity and a braking force of 20000 N is suddenly applied. It takes 6 seconds for the truck to stop. a) what is the deceleration of the truck? b) what is the velocity of the truck before the brakes were applied c) what distance did the ... 
Basic Physics
While standing on an open bed of a truck moving at 35 m/s, and archer sees a duck flying directly overhead. The archer shoots an arrow at the duck and misses. The arrow leaves the bow with a vertical velocity of 98 m/s. a) how long does it remain in the air b) the truck ... 
Physics Repost
I need help setting up this problem. A tennis player serves a tennis ball such that it is moving horizontally when it leaves the racquet. When the ball travels a horizontal distance of 19 m, it has dropped 58 cm from its original height when it left the racquet. What was the ... 
Physics
A truck of mass 8,000 kg is traveling along a level road at an initial speed of 25 m/s. The driver then shifts into neutral so that the truck is coasting, and the truck gradually slows to a final speed of 13 m/s. (a) Find the total work done on the truck. 
physic
An electronic line judge camera captures the impact of a 57.0g tennis ball traveling at 32.8 m/s with the side line of a tennis court. The ball rebounds with a speed of 21.2 m/s and is seen to be in contact with the ground for 4.08 ms. What is the magnitude of the average ... 
Physics
A 111 gram tennis ball strikes the court ground vertically with a speed of 3.6 m/s. If the ball bounces back with a speed of 2.2 m/s vertically upward, find the magnitude of the change in the tennis ball’s momentum, in kg m/s. 
AP physics
A 0.278kg volleyball approaches a player horizontally with a speed of 16.2 m/s. The player strikes the ball with her fist and causes the ball to move in the opposite direction with a speed of 22.4 m/s. (a) What impulse is delivered to the ball by the player? (Take the ... 
physics
A game of tennis... A tennis ball is served 2.00 degrees above the horizontal at a height of 2.40 meters, 12.0 meters from a net that is 0.900 meters high. (a) If the tennis ball is to clear the net by at least 0.200 meters, what is its minimum initial velocity? (b) If the ... 
physics collision
A 0.060 kg tennis ball, moving with a speed of 7.00 m/s has a headon collision with a 0.086 kg ball initially moving in the same direction at a speed of 3.10 m/s. Assume a perfectly elastic collision and take the initial direction of the balls as positive. 
Physics
A ball is thrown horizontally from the roof of a building 29.7 m high at 39.6 m/s. (a) What is the vertical velocity of the ball when it lands? (use down as the positive yaxis direction)b) What is the ball’s total velocity (speed and direction) when it lands? 
Science
A 0.50 kg ball traveling at 6.0 m/s collides headon with a 1.00 kg ball moving in the opposite direction at a velcity of 12.0 m/s. The 0.50 kg ball moves away at 14 m/s after the collision. Find the velocity of the second ball. 
physics
in apool game,a cue ball traveling at 0.75 m/s hits the stationary eight ball The eight ball moves with a velocity of 0.25 m/s at an angle of 37 deg reletive to the cue balls inital direction assuming that the collision is inelastic at what angle will the que be deflected and ... 
physics  i need A.S.A.P
A truck traveling at a constant speed of 30.6 m/s passes by a police car which is at rest. The police officer catches up to the truck in 700 m, maintaining a constant acceleration. i)Calculate how long it took the police's car to overtake the truck speeder 
uta
A tennis ball with a speed of 25.9 m/s is moving perpendicular to a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 21.3157 m/s. If the ball is in contact with the wall for 0.0133 s, what is the average acceleration of the ball while ... 
physics
 A tennis ball with a speed of 11.4 m/s is thrown perpendicularly at a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 8.64 m/s. If the ball is in contact... 
PHYYYYYSICS 5
Two trucks driven by Abby and Brian start at the same position and take off in different directions in an open field. Abby is traveling at a speed of 40 mph in a direction 30° south of west. Brian is traveling at a speed of 56 mph in a direction 75° north of east. What is ... 
Physics
A tennis ball with a speed of 5.0 m/s is thrown perpendicularly at a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 3.0 m/s. If the ball is in contact with the wall for 0.013 s, what is the average acceleration of the ball while it ... 
Physics
A tennis ball of mass= 0.058 kg and speed= 19 m/s strikes a wall at a 45 degree angle and rebounds with the same speed at 45 degrees. 1. What is the magnitude of the impulse given to the ball? 2. What is the direction of the impulse given to the ball?