A stone is being accelerated vertically upward by a string attached to it. Now suppose the string breaks and the stone slows in its upward motion. What is the acceleration of the stone at the top of its path?Express your answer with the appropriate units.

Question 1 Select all that apply: consider an a small rocket launched straight up so that it reaches some maximum height, and then falls back to the ground, reaching its final velocity right before it hits the ground (i.e.Vf † 0). Assume air resistance is negligible (no air resistance). Which of these statements are correct? Select all that apply. During the rockets trajectory, the acceleration of the rocket (a) = -9.81 m/s? Over the entire course of the rockets trajectory, average acceleration is zero. | Over the entire course of the rockets trajectory, average velocity is zero. Over the entire course of the rockets trajectory, average speed is zero. | The initial velocity of the rocket is equal to the final velocity of the rocket right before it hits the ground ) The initial velocity and final velocity of the rocket (right before it hits the ground) are equal in magnitude but opposite in direction | The initial speed and final speed of the rocket (right before hitting the ground) are…

A motorcycle begins at rest at t0 = 0 seconds. The motorcycle starts moving, and eventually covers a distance d = 712 m, in a time tf = 163 s. In a coordinate system with north being the positive x-direction, the motorcycle's motion is in the northern direction (see figure). If the motorcycle's final velocity at tf was 12 m/s, what was the motorcycle's average acceleration in the northern direction, aavg,N, during this period in m/s2?

A train, traveling at a constant speed of 22.0 m/s, comes to an incline with a constant slope. While going up the incline, the train slows down with a constant acceleration of magnitude 1.40 m/s2. (A) What is the speed of the train after 7.20 s on the incline? (B) How far has the train traveled up the incline after 7.20 s?