Questions in Laws of Motion

Select	Question
	An army vehicle of mass 1000 kg is moving with a velocity of 10 m/s and is acted upon by a forward force of 1000 N due to the engine and a retarding force of 500 N due to friction. What will be its velocity after 10 s
	A body of mass 2 kg is moving with a velocity 8 m/s on a smooth surface. If it is to be brought to rest in 4 seconds, then the force to be applied is
	The apparent weight of the body, when it is travelling upwards with an acceleration of $2m/{s^2}$ and mass is 10 kg, will be
	A man measures time period of a pendulum $(T)$ in stationary lift. If the lift moves upward with acceleration $\frac{g}{4},$ then new time period will be
	A 30 gm bullet initially travelling at 120 m/s penetrates 12 cm into a wooden block. The average resistance exerted by the wooden block is
	A force of 10 Newton acts on a body of mass 20kg for 10 seconds. Change in its momentum is
	A body of mass 1.0kg is falling with an acceleration of 10 $m/se{c^2}$. Its apparent weight will be $(g = 10m/{\sec ^2})$
	A player caught a cricket ball of mass 150 gm moving at the rate of 20 m/sec. if the catching process be completed in 0.1 sec the force of the blow exerted by the ball on the hands of player is
	If rope of lift breaks suddenly, the tension exerted by the surface of lift (a = acceleration of lift)
	A boy whose mass is 50kg stands on a spring balance inside a lift. The lift starts to ascent with an acceleration of $2m{s^{ - 2}}.$ The reading of the machine or balance $(g = 10\,m{s^{ - 2}})$is