Telangana Board Solutions for Chapter: Laws of Motion, Exercise 1: Exercise 1

An object of mass $5 \mathrm{kg}$ is moving with a velocity of $10 \mathrm{m} {\mathrm{s}}^{-1}$. A force is applied so that in $20 \mathrm{s}$, it attains a velocity of $25 \mathrm{m} {\mathrm{s}}^{-1}$. What is the force applied on the object?

A hammer of mass $400 \mathrm{g}$, moving at $30 \mathrm{m} {\mathrm{s}}^{-1}$, strikes a nail. The nail stops the hammer in a very short time of $0.01 \mathrm{s}$. What is the force of the nail on the hammer?

A man of mass $30 \mathrm{kg}$ uses a rope to climb which bears only $450 \mathrm{N}$. What is the maximum acceleration with which he can climb safely?

A vehicle has a mass of $1500 \mathrm{kg}$. What must be the force between the vehicle and the road if the vehicle is to be stopped with a negative acceleration of $1.7 \mathrm{m} {\mathrm{s}}^{-2}$?

Two ice skaters initially at rest, push each other. If one skater whose mass is $60 \mathrm{kg}$ has a velocity of $2 \mathrm{m} {\mathrm{s}}^{-1}$. What is the velocity of other skater whose mass is $40 \mathrm{kg}$?

Three identical blocks, each of mass $10 \mathrm{kg}$, are pulled as shown on the horizontal frictionless surface. If the tension ($F$) in the rope is $30 \mathrm{N}$. What is the acceleration of each block? And what are the tensions in the other ropes? (Neglect the masses of the ropes)

If a fly collides with the windshield of a fast-moving bus, is the impact force experienced, same for the fly and the bus? Why?

If a fly collides with the windshield of a fast-moving bus, is the same acceleration experienced by the fly and the bus? Why?