Wednesday

September 28, 2016
Number of results: 20,034

**Science**

A horizontal projectile with mass of 19.0kg is launched from a height of 7.0m above ground level with a horizontal speed of 250.0m/s. A)During projectile's flight, what forces are acting on it? B)What are the sizes & directions of the forces? C)Assuming ground below flight ...

*June 29, 2008 by Jenny*

**Physics**

Q Exactly 2.7s after a projectile is fired into the air from the ground ,it is observed to have a velocity v = (8.8i+4.5 j) m/s where the x-axis is horizontal and the y axis is positive upward . a)Determine the horizontal range of the projectile b)Determine the maximum height ...

*September 1, 2012 by Nikitha*

**Physics**

A projectile is launched at an angle of 6.0 degrees above the horizontal. Which component of the velocity vector remains the same during the flight (neglecting friction).

*October 12, 2009 by Mike*

**Physics**

Projectile motion problem where a projectile is launched from level ground and lands on level ground. I have to use the kinematic equations to show that the time it takes for the projectile to reach its maximum height is equal to one half of the the total flight time.

*September 25, 2015 by Anon2013*

**PHYSICS (PLEASE READ)**

I tried all the formulas i know but i cannot answer it I really need your help in this question.. A projectile was launched 64° above the horizontal, attaining a height of 10 m. What is the projectile's initial speed?

*November 24, 2011 by kike paul*

**Physics**

a projectile is launched in the horizontal direction. It travels 2.050 m horizontally while it falls 0.450 m vertically, and it then strikes the floor. What was the original velocity of the projectile? How long was it in the air?

*February 7, 2013 by Anonymous*

**physics math**

MULTIPLE -CHOICE QUESTION A baseball is launched from the bat at an angle θo = 30° what respect to the positive x-axis and with an initial speed of 40 m/s ,and it is caught at the same height from which it is was hit. Assuming ideal projectile motion (positive y-axis ...

*August 16, 2016 by himel*

**Physics**

A projectile is launched from a compressed spring on an inclined plane. The spring constant of the spring is k= 10 N/m, the mass is 1kg and the plane is inclined 30 degrees to the horizontal. If the spring is compressed 15 cm what will be the velocity of the projectile when it...

*March 18, 2015 by Carolyn*

**physics**

A certain projectile is launched with an initial speed Vo. At its highest point its speed is Vo / 6. What was the launch angle?

*February 9, 2012 by Alyssa*

**Algebra II**

A projectile is launched at an angle of 55.6 degrees to the horizontal and follows a straight path with a speed of 7550 m/min. Find the vertical and horizontale components of this velocity.

*November 2, 2011 by Arielle*

**Physics**

A catapult throws a projectile at a 40.0° angle with a velocity of 26.0 m/s. How high will the projectile reach, and how far away will the projectile land?

*December 18, 2010 by George*

**physics**

A projectile is launched at an angle of 36.2 degrees above the horizontal with an initial speed of 33.0 m/s. what is the horizontal component of its velocity?

*September 18, 2012 by Amy*

**physics**

After landing safely on the target the cat tries another projectile apparatus. This time the cat is shot out of a cannon over a 30 m high wall. The cat is launched at an angle of 55º0 and can be assumed to be at ground level during launch. With what speed (in km/h) does it ...

*January 21, 2013 by luellen*

**Physics**

For a given initial projectile speed, you observe that the projectile has a certain range R at a launch angle A = 30 degrees. For what other launch angle will the projectile have the same range (assuming the same initial projectile speed)? Without the use of mathematical ...

*February 17, 2014 by Tim*

**algebra word problem**

A projectile is launched upward from a height of 960 feet with an initial velocity of 64 ft/s. The equation gives the height h after t seconds. Find the number of seconds until it returns to the ground.

*January 3, 2015 by ljpoole*

**algebra word problem**

A projectile is launched upward from a height of 960 feet with an initial velocity of 64 ft/s. The equation gives the height h after t seconds. Find the number of seconds until it returns to the ground.

*January 3, 2015 by ljpoole*

**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...

*May 24, 2010 by Christy*

**Sindhi**

the velocity of a projectile at its highest point is 40 m/s.if the projectile was in air for 6 second before falling the ground calculate angle of projection of the projectile.

*September 23, 2012 by Asif Khan*

**Algebra**

The function H(t) = -16t2 + vt + s shows the height H (t), in feet, of a projectile launched vertically from s feet above the ground after t seconds. The initial speed of the projectile is v feet per second. Part A: The projectile was launched from a height of 90 feet with an ...

*April 17, 2016 by Ashlee*

**science**

If a projectile is shot under an angle of 30* with a force of 500N what is the time the projectile reaches the maximum hight.The projectile's mass is 100g.(g=10N/kg)

*March 27, 2016 by Christian*

**physics**

A projectile is launched straight up at 55.5 m/s from a height of 73.5 m, at the edge of a sheer cliff. The projectile falls, just missing the cliff and hitting the ground below.

*September 27, 2013 by steven*

**math**

A projectile is fired directly upward with a muzzle velocity of 860 feet per second from a height of 7 feet above the ground. a. Determine a function for the height of the projectile t seconds after it’s released. b. How long does it take the projectile to reach of height of ...

*March 7, 2010 by bill*

**Physics **

A projectile is launched at an angle of 64.3 degrees with the horizontal (x axis) at some unknown velocity. After 4 seconds, the object's angle of trajectory is 47.2 degrees above the horizontal. What is the object's vertical displacement at this time in meters?

*October 4, 2012 by Haley*

**math**

If a projectile is launched from a platform 30 feet high with an initial velocity of 128 feet per second, then the height of the projectile at t seconds is given by s(t) = –16t2 + 128t + 30 feet. (a) At what time does the projectile attain its maximum height? Show some work. (...

*November 9, 2010 by Math is HARD*

**calculus**

The height of a projectile launched into the air is given by h (t)= -16t^2 + 48t + 60, where h is the height of the projectile in feet above the ground and t is the number of seconds after its launch. Find the *instantaneous rate of change* in the height of the projectile at 1...

*April 26, 2013 by Brandy*

**physics**

A projectile was fired out of a lead ejector at an angle of 45 degrees up from horizontal. The projectile velocity was 1000.00 meters per second. How high did it go? and how far did the projectile go?

*May 2, 2013 by john*

**physics**

a projectile launched horizontally hits the ground in .6 seconds. if it had been launched with a much lower speed in the same direction, it would have hit the ground in

*November 1, 2009 by stephanie*

**physics**

a projectile is fired from the top of a building with an initial velocity straight upward at 40m/sec. the top of the building is 50 meters above the ground? a) the maximun height of the projectile above the building b) the time for the projectile to reach the top c) the ...

*October 15, 2011 by daniel*

**physics math**

A Projectile is launched from the top of a building with an initial velocity of 30m/s at angle of 60° above the horizontal. The magnitude of its velocity at t= 5 s after the launch is

*August 16, 2016 by himel*

**PHYSICS**

A Projectile IS FIRED FROM THE TOP OF A BUILDING WITH AN INITIAL VELOCITY STRAIGH UPWARD AT 40.0 M/SEC . THE TOP OF THE BUILDING IS 50.0 METERS ABOVE THE GROUND. A) THE MAXIMUN HEIGHT OF THE PROJECTILE ABOVE THE BUILDING. B) THE TIME FOR THE PROJECTILE TO REACH THE TOP. C) THE...

*October 16, 2011 by HELPPMEEEEEEEEEE*

**Physics**

What is the kinetic energy of an ideal projectile of mass 19.4 kg at the apex (highest point) of its trajectory, if it was launched with an initial speed of 29.2 m/s and at an initial angle of 46.9° with respect to the horizontal?

*October 21, 2014 by Anonymous*

**physics**

projectile is launched horizontally from edge of cliff 20 m high with an initial speed of 10 m/s. what is the horizontal distance the projectile travels before striking the level ground below the cliff? what formula do i use?

*October 22, 2008 by Bailey*

**Physics**

A cannon fires projectile (ordinarily called a cannonball) at an angle 85 degrees from the ground. The cannonball has a speed 150 m/s, and it is launched from hill 20 m above the plain where it will land.

*February 11, 2015 by Jay*

**physics**

A projectile is projected with speed u at an angle alpha on an inclined plane of inclination angle bita. Find time of flight nn inclined plane and maximum height attained by projectile w.r.t. Inclined plane, range of projectile on inclined plane, angle of projection for which ...

*July 24, 2011 by Shivam*

**precalc**

A projectile is launched from a platform 10 feet high with an initial velocity of 72 feet per second, The height h of the projectile at t seconds after launch is given by h = –16t2 + 72t + 10 feet.

*July 7, 2016 by Tony*

**Applying Algebraic Thinking to Data**

Snoopy is in his plane, 4500 ft above ground. he fires a projectile straight up. The Vo of the projectile is 340 ft/s. (after the projectile is fired, it has no acceleration, so its height can be modeled by a "falling body" model). The Red baron is maintaining a constant ...

*April 20, 2012 by Rachelle*

**Pre-Calc, please a.s.a.p!!**

A projectile propelled straight upward from the ground is modeled by the function d(t)=-16t^2+304t. a) At what time does the projectile reach maximum height? b) What is the maximum height? c) At what times is the projectile more than 500 feet above the ground. Write your ...

*December 13, 2015 by Sumejja*

**physics**

1. A certain projectile is launched with an initial speed v0. At its highest point its speed is v0/6. What was the launch angle? 2. The "hang time" of a punt is measured to be 3.50 s. If the ball was kicked at an angle of 61.0° above the horizontal and was caught at the same ...

*October 3, 2012 by Franklin*

**College Physics**

1. A certain projectile is launched with an initial speed v0. At its highest point its speed is v0/6. What was the launch angle? 2. The "hang time" of a punt is measured to be 3.50 s. If the ball was kicked at an angle of 61.0° above the horizontal and was caught at the same ...

*October 3, 2012 by Lizz*

**physics**

As a projectile shot at an upward angle rises and falls what happens to its horizontal component of its velocity if we neglect air resistance?

*December 17, 2013 by Anonymous*

**Physics**

A projectile is launched vertically from the surface of the Moon with an initial speed of 1130 m/s. At what altitude is the projectile's speed three-fourths its initial value?

*November 15, 2009 by Emily*

**Physics**

A projectile is launched vertically from the surface of the Moon with an initial speed of 1500. At what altitude is the projectile's speed one-half its initial value?

*April 28, 2012 by Turk*

**physics**

A projectile is launched vertically from the surface of the Moon with an initial speed of 1210 m/s. At what altitude is the projectile's speed two-fifths its initial value?

*April 25, 2014 by Cam*

**Physics**

PROJECTILE LAUNCHED FROM EARTH'S SURFACE? A projectile is shot straight up from the earth's surface at a speed of 1.20×10^4km/hr. How high does it go? (answer in km) Supposed to solve this using F=G(mm/2r)...?

*April 12, 2011 by Dan*

**Physics (last question)**

A 800 kg projectile is fired vertically upward with an intitial velocity of 50 m/s. Assuming that no friction is present, how high above the ground will the projectile travel?

*November 15, 2007 by Elizabeth*

**physics**

True/False (#1 only) 1)The horizontal motion of a horizontally launched projectile affects its vertical motion. False 2)The path of a projectile through space is called its. Trajectory

*April 1, 2008 by Jon*

**Physics**

A projectile is launched from ground level with an inital velocity of 50 m/s at an angel of 60 degreess aove the horizontal. Use g=10m/s. What is the max height reached by the projectile? I used change in y=voyt +1/2at^2 =50(2.4) + 1/2(=10) (2.5)^2 =125-31.25 =93.75m I was ...

*September 26, 2007 by Tammy*

**Calculus (Gr.12) Math**

I am not sure how to do this question I know I have to take the derivative but then I am left w/ to unknowns. If a projectile is shot up hill the distance (range) of the landing point up the hill depends on the initial speed of the projectile,v, the angle of inclination, a, ...

*April 6, 2013 by Bob*

**Physics **

A projectile is fired from ground level with a speed of 40 m/s at an angle of 30 degrees and hits a building 100m away. What is the time of flight of the projectile? How high above ground does the projectile hit the building? What is the speed of the projectile just before it ...

*February 5, 2012 by Krystal*

**Physics**

What is the kinetic energy of an ideal projectile of mass 19.4 kg at the apex (highest point) of its trajectory, if it was launched with an initial speed of 29.2 m/s and at an initial angle of 46.9° with respect to the horizontal? I know kinetic energy equals half of mass ...

*October 21, 2014 by Anonymous*

**Physics**

In the javelin throw at a track and field event, the javelin is launched at a speed of 25 m/s at an angle of 30.7° above the horizontal. As the javelin travels upward, its velocity points above the horizontal at an angle that decreases as time passes. How much time is ...

*September 28, 2010 by blah*

**physics**

In the javelin throw at a track and field event, the javelin is launched at a speed of 29 m/s at an angle of 35° above the horizontal. As the javelin travels upward, its velocity points above the horizontal at an angle that decreases as time passes. How much time is required ...

*September 15, 2010 by Xavier*

**physics **

In the javelin throw at a track-and-field event, the javelin is launched at a speed of 35.0 m/s at an angle of 33.7 ° above the horizontal. As the javelin travels upward, its velocity points above the horizontal at an angle that decreases as time passes. How much time is ...

*January 26, 2012 by Erin*

**AP Physics 1**

In the javelin throw at a track-and-field event, the javelin is launched at a speed of 33 m/s at an angle of 32° above the horizontal. As the javelin travels upward, its velocity points above the horizontal at an angle that decreases as time passes. How much time is required ...

*October 14, 2015 by Anonymous*

**physics**

Brandon launches a projectile at an angle of 75 above the horizontal, which strikes he ground a certain distance down range. fo what oher angle of launch at the same speed would the projectile land just as far away?

*September 28, 2011 by Anonymous*

**physics**

brandon launches a projectile at an angle of 75 degrees above the horizontal, which strikes the ground a certain distance down range. for what other angle of launch at the same speed would the projectile land just as far away?

*December 7, 2010 by sabina*

**Physics**

Brandon launches a projectile at an angle of 75 degrees above the horizontal, which strikes the ground a certain distance down range. For what other angle of launch at the same speed would the projectile land just as far away?

*September 24, 2012 by Baylyn*

**physics**

a projectile is fired at 50 meters per second at an angle of 30 degrees below the horizontal off a cliff that is 50 meters high. How far away and at what speed and angle will this projectile land?

*November 2, 2014 by Joanne*

**physics**

A projectile is fired at an angle of 30ᵒ above the horizontal from the top of the cliff 600 ft high. The initial speed of the projectile is 2000 ft/s. how far will the projectile move horizontally before it hits the level ground at the base of the cliff?

*January 13, 2014 by Anonymous*

**College Algebra**

A projectile is thrown upward with an initial velocity of 272 feet per second. After t seconds, its height h(t)above the ground is given by the function : h(t)=-16t^2+272t. a. Determine the projectile's maximum height. b. Determine how long it takes the projectile to reach its...

*February 18, 2012 by Amelia*

**physics**

A projectile is shot from the edge of a cliff 125 m above ground level with an initial speed of 105 m/s at an angle of 37.0o with the horizontal, as shown in Figure 3-39. (a) Determine the time taken by the projectile to hit point P at ground level. (b) Determine the range X ...

*April 25, 2012 by matin*

**physics**

A projectile is fired at an upward angle of 45 degrees from the top of a 265 m cliff with a speed of 350 m/s. What will be it's speed when it strikes the ground below?

*October 26, 2010 by jessica*

**Pre-Calculus**

Hello, A projectile is launched straight up from the ground with an initial velocity of 320 ft/sec. a. When will the projectiles height above the ground be 1024 ft? For this I got 16 seconds b. When will the height of the projectile be at least 24 ft? I am not sure how to ...

*September 6, 2009 by Ashley*

**Physics**

A projectile on level ground is launched with a certain speed vi and has a downrange distance of vx what is its new downrange distance if it is launched with a speed of 4vi instead?

*February 19, 2015 by Dan*

**precalc**

A projectile is launched from a platform 20 feet high with an initial velocity of 48 feet per second, The height h of the projectile at t seconds after launch is given by h = –16t^2 + 48t + 20 feet. (a) How many seconds after launch does the projectile attain maximum height? (...

*July 12, 2015 by Brooke*

**College physics**

A projectile is launched vertically from the surface of the Moon with an initial speed of 1400 . At what altitude is the projectile's speed one-half its initial value? do you use the equation Ei = Ef and vf would be 700 E= 1/2 mv^2 -G (Mass of the moon/radius)

*November 19, 2009 by Mary*

**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...

*November 4, 2013 by ashok*

**Math**

A projectile is fired with an initial velocity of 350 feet per second at an angle of 45° with the horizontal. To the nearest foot, find the maximum altitude of the projectile. The parametric equations for the path of the projectile are x = (350 cos 45°)t, and y = (350 sin 45°)...

*April 12, 2008 by Devon*

**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...

*October 26, 2013 by askas*

**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....

*October 25, 2013 by Anonymous*

**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....

*October 25, 2013 by Anonymous*

**Physics**

A projectile is launched with 200kg m/s of momentum and 1000 J of kinetic energy. What is the mass of the projectile. The answer is said to be 20 kg but I can't get it. I tried this but it didnt work: p=mv=200 m=200/v I plugged that into this equation: KE=1/2mv^2=1000 = 1/2(...

*October 23, 2007 by Marisol*

**Projectile Motion Physics**

An Arrow directed at a stationary target is shot at an angle of E25N. The arrow hits the intended target at the same height from which it is launched, 3.0s later. Determine the distance from the archer to the target.

*October 6, 2010 by Jason*

**Aberdeen**

A model rocket is launched straight upward with an initial speed of 40.0 m/s. It accelerates with a constant upward acceleration of 2.50 m/s2 until its engines stop at an altitude of 120 m.

*September 20, 2010 by James*

**COLLEGE PHYSICS**

A rocket is launched at an angle of 60.0° above the horizontal with an initial speed of 99 m/s. The rocket moves for 3.00 s along its initial line of motion with an acceleration of 32.0 m/s2. At this time, its engines fail and the rocket proceeds to move as a projectile.

*September 10, 2010 by CARY*

**mechanics**

A projectile is launched from the origin with a speed of 2 ms−1 at the angle of 60∘ from the horizontal. Assume that ground to be flat and plane of trajectory to be x-y plane with x-axis along horizontal. The radial and tangential components of its velocity at its ...

*August 23, 2016 by Anonymous*

**12th grade**

A projectile is shot from the edge of a cliff h = 125 m above ground level with an initial speed of v0 = 115 m/s at an angle of 37.0° with the horizontal, as shown in Fig. 3-39 (a) Determine the time taken by the projectile to hit point P at ground level. (b) Determine the ...

*September 22, 2009 by sundus*

**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....

*October 28, 2013 by Anonymous*

**physics**

A projectile is fired with velocity v at angle thita. Find the time when velocity of projectile will make angle 90' with initial direction of velocity?

*July 25, 2011 by Shivam*

**physics**

A projectile is fired with velocity v at angle thita. Find the time when velocity of projectile will make angle 90' with initial direction of velocity?

*July 25, 2011 by Shivam*

**Applied Maths**

the horizontal range of a projectile is 4a. It passes a tower that height a/2 when the horizontal range was a. What is the projectile velocity and projectile angle.

*December 18, 2010 by Danvi*

**ap physics**

A ball is launched at an upward angle of 45 degrees from the top of a cliff 165 meters high, with a speed of 180 m/s. Use conservation of energy to find how fast it will be traveling when it hits the ground.

*November 19, 2010 by max*

**physics**

An object is launched at a speed of 15 m/s. If it rises to a height of 2 m, at what angle was it launched?

*October 15, 2015 by walter*

**physics**

4. Assuming that ball 1 was thrown with an initial velocity of 5 m/s, how far will it land away from the building horizontally? A. 10 M b. 16 M C. 21 M D. 0.63 M 5. A projectile is launched a t 35 m/s at an angle of 33 degrees. Determine (a) the maximum height of the ...

*October 31, 2015 by Anonymous*

**AP PHSYICS DUE LATE HOMEWORK HELP!!!**

4. Assuming that ball 1 was thrown with an initial velocity of 5 m/s, how far will it land away from the building horizontally? A. 10 M b. 16 M C. 21 M D. 0.63 M 5. A projectile is launched a t 35 m/s at an angle of 33 degrees. Determine (a) the maximum height of the ...

*October 31, 2015 by Anonymous*

**MAth**

projectile is fired from the ground s=0 ft with initial speed of v=800 ft/sec at an angle of elevation 30 degrees State the vector function the projectile follow,projectile initial velocity vector,vector function,projectile speed function

*March 10, 2016 by Sam*

**Physics**

A projectile is fired at an upward angle of 25.0^\circ from the top of a 310 m cliff with a speed of 220 m/s. What will be its speed when it strikes the ground below? (Use conservation of energy.)

*November 15, 2010 by Linda*

**physics**

a projectile is shot up 25 m/s at an angle of 34 degress how high imto the air does the projectile go?

*March 28, 2011 by kane*

**Physics Projectile Motion**

What angle (from earth) should one shoot a projectile so that it reaches it's maximum?

*November 8, 2012 by Leslie*

**physics**

A ship maneuvers to within 2500m of an island's 1800m high mountain peak and fires a projectile at an enemy ship 610m on the other side of the peak. If the ship shoots the projectile with an initial velocity of 250m/s at an angle of 75 degrees. how close to the enemy ship does...

*October 8, 2010 by Sydney*

**College Physics**

A projectile is fired at an upward angle of 55.0 degrees from the top of a 230m cliff with a speed of 180m/s.What will be its speed when it strikes the ground below? (Use conservation of energy.)

*February 25, 2010 by Sandy*

**Physics**

a projectile has an initial velocity of 15.0 m/s at an angle of 30 degrees above the horizontal. What is the location of the projectile 2.0 seconds later?

*November 22, 2011 by nam maurer*

**Physics grade 11 HELP**

A cannon fires a projectile at 75 m/s at an angle of 56.7 above the horizontal. How high does the projectile get off the ground?

*May 29, 2016 by Shirley*

**physics**

a projectile with a muzzle velocity of 550 m/s is fired from the a gun on top of a cliff 460 m above the sea level at a certain angle with respect to the horizontal. if the projectile hits the ocean surface. 49.2 seconds after being fired, determine the horizontal range of the...

*May 4, 2013 by jennierson*

**Physics**

If a projectile has a launching angle of 52 degrees about the horizontal and an initial speed of 18 m/s, what is the highest barrier that the projectile can clear?

*May 11, 2011 by Addie*

**Science - Physics**

When a projectile is fired horizontally, which of the components of its motion is (A) motion at constatnt speed (B) uniformly accelerated motion (C) If the initial velocity of the projectile is increased, what effect will this have on the time it takes the projectile to fall ...

*December 6, 2006 by Nicole*

**Math**

A projectile is launched from a cannon that sits 4 feet off the ground at an initial velocity of 120 ft/sec. Find the position function and how long is it before the projectile hits the ground? I got -16t^2 +120t+4 for my position function, but I'm not sure how to find the ...

*November 12, 2013 by Kristen*

**Physics**

A projectile is fired with an initial speed of 31.0 at an angle of 10.0 above the horizontal. The object hits the ground 7.50 later. a. How much higher or lower is the launch point relative to the point where the projectile hits the ground? b. To what maximum height above the ...

*October 15, 2009 by Kelcie*

**Physics**

A projectile is fired with an initial speed of 28.0 m/s at an angle of 65 degrees above the horizontal. The object hits the ground 9.5 seconds later. a) How much higher or lower is the launch point relative to the point where the projectile hits the ground? b) To what maximum ...

*October 19, 2011 by Sara*

**calculus**

A projectile is launched from a platform 20 feet high with an initial velocity of 72 feet per second, The height h of the projectile at t seconds after launch is given by h = –16t2 + 72t + 20 feet. (a) How many seconds after launch does the projectile attain maximum height? ...

*March 10, 2012 by Brian*