Anil Ahlawat Solutions for Chapter: Force and Laws of Motion, Exercise 1: EXERCISES

In the first second of it flight, a rocket ejects $\frac{1}{40}$ of its mass with a velocity of $1200 {\mathrm{ms}}^{-1}$. The acceleration of the rocket is

Match column I and column II and select the correct option.

Read the given statements and select the correct option.

Statement 1: If we push a massive truck parked along the roadside, it will not move.
Statement 2: Two opposite and equal forces acted on two bodies in contact cancel each other.

The force $F$ acting on a particle of mass $m$ is indicated by the force-time graph shown below. The change in momentum of the particle over the time interval from zero to $8 \mathrm{s}$ is

Rahul is travelling in a bus moving at a constant speed of $50 {\mathrm{kmh}}^{-1}$. At one point of his journey, he throws a ball vertically upwards to a height $40 \mathrm{cm}$, the ball will fall (Neglect air friction).

A large truck and a car, both moving with a velocity of magnitude $v$, have a head-on collision and both of them come to halt after that. If the collision lasts for $10 \mathrm{s}$ then

(i) The car will experience the greater force of impact exerted by the truck
(ii) The truck will experience the greater momentum change
(iii) Car will experience the greater average acceleration than truck.

Three identical bodies, each of mass $m$, are pushed by a force $F$ on a frictionless table as shown in figure.

Two blocks made of different metals identical in shape and size are acted upon by equal forces which causes them to slide on a horizontal surface. The acceleration of the second block is found to $10$ times that of the first. What is the ratio of mass of the second to the first?