Motion in a Str...

A car moves from X to Y with a uniform speed v_u and returns to Y with a uniform speed v_d . The average speed for this round trip is

A body of mass 10 kg is moving with a constant velocity of 10 ms^-1 . When a constant force acts for 4 s on it, it moves with a velocity 2 ms^-1 in the opposite direction. The acceleration produced in it is

A particle moves along a straight line OX. At a time t (in second) the distance x (in metre) of the particle from O is given by x = 40 + 12t – t³ . How long would the particle travel before coming to rest?

A bullet comes out of the barrel of gun of length 2 m with a speed ms^-1. The average acceleration of the bullet is

A body is moving with uniform acceleration covers 200 m in the first 2 s and 220 m in the next 4 s. Find the velocity in ms^-1 after 7 s.

From the top of tower a body A is projected vertically up, another body B is horizontally thrown and a third body C is thrown vertically down with same velocity. Then,

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

A particle moving with a uniform acceleration travels 24 m and 64 m in the first two consecutive interval of 4 s each. Its initial velocity will be

A source of constant voltage V is connected to a resistance R and two ideal inductors L₁ and L₂ through a switch S as shown. There is no mutual inductance between the two inductors. The switch S is initially open. At t = 0, the switch is closed and current begins to flow. Which of the following options is/are correct?