Embibe Experts Solutions for Exercise 1: EXERCISE

A heavy vehicle moving with velocity $15 \mathrm{m} {\mathrm{s}}^{-1}$ strikes an object of very small mass at rest head on elastically. Velocity of object after collision is

A block of $10 \mathrm{g}$ slides on smooth horizontal surface with $20 \mathrm{m} {\mathrm{s}}^{-1}$ towards a spring of spring constant $100 \mathrm{N} {\mathrm{m}}^{-1}$ placed horizontally (as shown in figure). The maximum compression in spring is

Two steel balls $A$ and $B$ of mass $10 \mathrm{kg}$ and $10 \mathrm{g}$ rolls towards each other with $5 \mathrm{m} {\mathrm{s}}^{-1}$ and $1 \mathrm{m} {\mathrm{s}}^{-1}$ respectively on a smooth floor. After collision; with what speed $B$ moves [perfectly elastic collision]?

Two ivory balls are placed together at rest. A third identical ball moving with velocity $u$ In line of first two balls; as shown in figure collide head on elastically then

Two identical balls moving in opposite directions with speeds $20 \mathrm{m}\hspace{0.17em}{\mathrm{s}}^{-1}$ and $25 \mathrm{m} {\mathrm{s}}^{-1}$ Undergo head on perfectly inelastic collision. The speed of combined mass after collision is

A ball of mass $5 \mathrm{kg}$ moving with speed $8 \mathrm{m} {\mathrm{s}}^{-1}$ collides head on with another stationary ball of mass $15 \mathrm{kg}$. If collision is perfectly inelastic, then loss in kinetic energy is

Two identical balls each moving with speed $v$ At right angle to each other collide perfectly inelastically. Their speed after collision is

A body of mass $m$ moving with a constant velocity collides head on with another stationary body of same mass. If the coefficient of restitution between the bodies is $\frac{1}{2}$ then ratio of velocities of two bodies after collision will be