1.Define elastic limit?
2.A person sitting in a train moving with constant velocity along a straight line throws a ball
vertically upwards. Will the ball return to thrower’s hand? Why?
3.Can a body in linear motion be in equilibrium?
4.A projectile is fired horizontally with a velocity of 98 m/s from the top of a hill 490m high. Find a)The
time taken to reach the ground b) The distance of the target from the hill and c) The velocity with
which the projectile hits the ground.
5.State and prove work energy theorem for a variable force.
6.If a body falling from a height of 20 m rebounds from a hard floor, it loses 40% of its energy in
impact. What is the height to which it would rise after the impact?
7.What will be its time of flight, if the object be projected at an angle θ?
8.A body covers 400 cm in the first 4 seconds and 440cm in the next two seconds.
a) What will be its velocity at the end of 14 seconds?
b) Find the displacement in 14 seconds.
9.Explain that the total linear momentum of an isolated system of interacting particles is conserved.
10.Establish the kinetic equation
s=ut+at2/2
from velocity-time graph for uniformly accelerated
motion.
2.A person sitting in a train moving with constant velocity along a straight line throws a ball
vertically upwards. Will the ball return to thrower’s hand? Why?
3.Can a body in linear motion be in equilibrium?
4.A projectile is fired horizontally with a velocity of 98 m/s from the top of a hill 490m high. Find a)The
time taken to reach the ground b) The distance of the target from the hill and c) The velocity with
which the projectile hits the ground.
5.State and prove work energy theorem for a variable force.
6.If a body falling from a height of 20 m rebounds from a hard floor, it loses 40% of its energy in
impact. What is the height to which it would rise after the impact?
7.What will be its time of flight, if the object be projected at an angle θ?
8.A body covers 400 cm in the first 4 seconds and 440cm in the next two seconds.
a) What will be its velocity at the end of 14 seconds?
b) Find the displacement in 14 seconds.
9.Explain that the total linear momentum of an isolated system of interacting particles is conserved.
10.Establish the kinetic equation
s=ut+at2/2
from velocity-time graph for uniformly accelerated
motion.
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