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 readings on the scale in each case?

A man of mass 70 kg stands on a weighing scale in a lift which is moving :- downwards with a uniform acceleration of 5 m s^-2 ,

A man of mass 60 kg stands on a weighing machine in a lift which is moving downwards with a uniform acceleration 2 m s^-2 . What would be the reading of machine?

A man weighs 80 kg. He stands on a weighing scale in the lift, which is moving upward with a uniform acceleration of 5 ms^-2 what whould be the reading on the scale? (g = 10 m//s^2) .

A man weighs 70 kg. He stands on a weighing scale in a lift which is moving? upwards with a uniform acceleration of 5 ms^-2 .

A man of mass 70 kg stands on a weighing scale in a lift which is moving :- What would be the reading if the lift mechanism failed and it hurtled down freely under gravity ?

A bolt of mass 0.3 kg falls from the ceiling of an elevator moving down with an uniform speed of 7 m s^-1 . It hits the floor of the elevator (length of the elevator = 3 m) and does not rebound. What is the heat produced by the impact ? Would your answer be different if the elevator were stationary ?

A body is moving with uniform velocity of 10 ms^-1 for last 10 s, what is its acceleration?

A boy standing on a stationary lift (open from above) throws a ball upwards with the maximum initial speed he can, equal to 49 m s^-1 . How much time does the ball take to return to his hands? If the lift starts moving up with a uniform speed of 5 m s^-1 and the boy again throws the ball up with the maximum speed he can, how long does the ball take to return to his hands ?

The total mass of an elevator with a 80 kg man in it is 1000 kg. This elevator moving upward with a speed of 8 ms^-1 is brought to rest over a distance of 16 m. Calculate the force exerted on man by the elevator floor.