Question

At time t = 0 s, a rock is thrown vertically upward from the ground. At time t = 1.6 s, it passes the top of a tall tower. 0.80 s later, it reaches its maximum height.

Q)How fast is the rock moving as it passes the top of the tower?

A car moving with constant acceleration covers the distance between two points 120 m apart in a time of 8.0 s. Its speed at the second point is 12 m/s.

Q)What is the speed of the car at the first point?

Q)What was the magnitude and direction of the car's constant acceleration? Indicate the direction by the sign. The positive direction is to the right.

Q)At what position is the car at rest? Assume that the first point is the origin (x = 0 m). If the car is never at rest, answer 0 m.

Answer 1

In case of any doubt, please do comment sir.