A body is at rest on the ground. At t = 0 s, a force is...
A body is at rest on the ground. At t = 0 s, a force is applied on the body causing it to have a constant acceleration of a = 3 m/s^2 upwards. At t = 15 s, the force stops. (You may ignore air resistance in your calculations)
a. What is the height of the body at t = 15 s?
b. What is the maximum height the body reaches, and what is time at that point?
c. How much time will it take for the body to return to the ground?
d. Draw a graph of the velocity as a function of time and use it to calculate the displacement of the body and the total path from its launch to its return to the ground.
Homework Answers
A ball is thrown vertically upwards with an initial velocity of 18.80 m/s, from the ground....
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A ball is thrown vertically upwards with an initial velocity of 18.80 m/s, from the ground. How long is the ball in the air? (Neglect air resistance.) What is the greatest height reached by the ball? Calculate the time at which the ascending ball reaches a height of 12.8 m above the ground. A rocket, initially at rest on the ground, accelerates straight upward with a constant acceleration of 53.0 m/s^2, until the fuel is used up after 6.80s. What...
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(8%) Problem 11: A student launches a small rocket which starts from rest at ground level. At a height of h- 1.85 km the rocket reaches a speed of ve 395 m/s. At that height the rocket runs out of fuel, so there is no longer any thrust propelling it. Take the positive direction to be upward in this problem. Ctheespertta.com 33% Part (a) Assuming constant acceleration, what is the rocket's acceleration, in meters per second squared, during the period...
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