Motion in A Str...

A free falling body travels ___ of total distance in 5th second.

A body of mass $$m$$ accelerates uniformly from rest to velocity $${v}_{1}$$ in time interval $${T}_{1}$$. The instantaneous power delivered to the body as a function of time $$t$$ is:

If the time of acceleration is $${t}_{1}$$, then the speed of the car at $$t={t}_{1}$$ is:

A balloon is ascending vertically with an acceleration of 0.2 m $$s^{-2}$$ . Two stones are dropper from it at an interval of 2 s. The distance between them when the second stone is dropped is (take g = 9.8 m $$s^{-2}$$):

The velocity acquired by a body moving with uniform acceleration is $$30 \,m/s$$ in $$2$$ seconds and $$60 \,m/s$$ in $$4$$ seconds. The initial velocity is:

A body freely falling from a height $$h$$ describes $$\dfrac {7h}{16}$$ in the last second of its fall. The height $$h$$ is $$(g=10\ {ms}^{-2})$$

A satellite orbiting round the earth appears stationary when:

If a particle is thrown with velocity more than $$10\ m/s$$ vertically upward, then the distance traveled by the particle in last second of its ascent is:

A block of mass 5 kg is moving horizontally at a speed of 1.5 m/s. A perpendicular force of 5 N acts on it for 4 sec. What will be the shortest distance of the block from the point where the force started acting.

The speed of a body is doubled when it moves over a distance of $$10\ m$$. If the initial speed be $$u$$, what will be the speed after further coverage of distance $$10\ m$$?