Physics Past Questions and Answers

A man standing on a lift that is descending does not feel any weight because

A The inside of the lift is air tight
B The lift is in vacuum
C There is no reaction from the floor of the lift
D There is no gravitational pull on the man in the lift

Question 1517:

Two balls X and Y weighing 5 g and 50 kg respectively were throne up vertically at the same time with a velocity of 100 ms1 .How will their positions be one second later?

A X and Y will be 500 m from each other
B Y will be 500 m ahead of X
C X will be 500 m ahead of Y
D X and Y both be 500 m from the poin of throw

Question 1518:

If it takes an object 3s to fall freely to the ground from a certain height, what is the distance covered by the object?

A 90 m
B 30 m
C 45 m
D 60 m

Question 1519:

An object of mass 2 kg moves with a velocity of 10 ms1 round at circle of radius 4 m. Calculate the centripetal force on the object

A 25 N
B 100 N
C 50 N
D 40 N

Question 1520:

A carpenter on top of a roof of 20.0m high dropped a hammer of mass 1.5 kg and it fell directly to the ground. the kinetic energy of the hammer just before hitting the ground is?[g = 10 ms-2]

A 600 J
B 150J
C 300 J
D 450 J