MOTION IN A STRAIGHT LINE Set 3

A body freely falling from rest has a velocity after it falls through distance . The distance it has to fall down further for its velocity to become double is

Four marbles are dropped from the top of a tower one after the other with an interval of one second. The first one reaches the ground 4 seconds. When the first one reaches the ground the distances between the first and second, the second and third and the third and forth will be respectively

A particle starts from the origin and moves along the -axis such that the velocity at any instant is given by , where is in second and velocity is in . What is the acceleration of the particle when it is 2 m from the origin?

The ratios of the distances traversed, in successive intervals of time by a body, falling from rest are

Which of the following graphs can not possibly represent one dimensional motion of a particle

A particle moves along axis as

An object is dropped from rest. Its - graph is

A parachutist after bailing out falls without friction. When parachute opens, it decelerates at . He reaches the ground with a speed of . At what height, did he bail out

Figures (i) and (ii) below show the displacement-time graphs of two particles moving along the -axis. We can say that

A body is released from a great height falls freely towards the earth. Another body is released from the same height exactly a second later. Then the separation between two bodies, 2 s after the release of the second body is, nearly