Laws of Motion ...

A truck starts from rest and accelerates uniformly at 2.0 ms^-2. At t = 10 s, a stone is dropped by a person standing on the top of the truck (6 m high from the ground). What is the magnitude of acceleration (in ms^-2) of the stone at t = 11s? (Neglect air resistance.)

A bob of mass 0.1 kg hung from the ceiling of a room by a string 2 m long is set into oscillation. The speed of the bob at its mean position is 1 m s⁻¹.What is the trajectory of the bob if the string is cut when the bob is at one of its extreme positions

A bob of mass 0.1 kg hung from the ceiling of a room by a string 2 m long is set into oscillation. The speed of the bob at its mean position is 1 m s⁻¹.What is the trajectory of the bob if the string is cut when the bob is at its mean position?

A man of mass 70 kg stands on a weighing scale in a lift which is moving upwards with a uniform acceleration of 5 m s⁻² what would be the reading on the scale?

A man of mass 70 kg stands on a weighing scale in a lift which is freely falling under gravity. What would be the reading on the scale?

A man of mass 70 kg stands on a weighing scale in a lift which is moving upwards with a uniform speed of 10 m s⁻¹. What would be the reading if the lift mechanism failed and it hurtled down freely under gravity?