1Which one of the following conclusions is correct while observing a freely falling object every second? (i) the distance covered increases uniformly (ii) velocity increases uniformly (iii) acceleration increases uniformly (iv) translation takes place uniformly
2Give reason: Jumping from a significant height may cause more injury.
3When a stone is dropped from a bridge over a river into the water, the sound of the stone hitting the surface of the water is heard after 2.5 seconds. Calculate the height of the bridge from the surface of the water. (g = 9.8 m/s²)
4If a stone is dropped from a height of 15 m, how long will it take to reach the ground? Calculate the velocity of the stone when it hits the ground.
5If a cricket ball is thrown vertically upwards into the sky with a velocity of 15 m/s, to what maximum height will the ball reach?
6Write the three equations of motion for free fall and say what each letter stands for.
7Why is the value of g taken as negative when a body is thrown vertically upward?
8A ball is thrown vertically upward at 19.6 m/s. How long does it take to reach the top, and how high does it go? (g = 9.8 m/s²)
9A stone is dropped from a height of 20 m. With what velocity does it hit the ground? (g = 9.8 m/s²)
10When finding the height of a building by timing a falling stone, why is the fall timed several times and the average taken?