149139 A body of mass $2 \mathrm{~kg}$ moving with velocity of $6 \mathrm{~m} / \mathrm{s}$ strikes in elastically with another body of same mass at rest. The amount of heat evolved during collision is

149140 A body of mass $5 \mathrm{~m} \mathrm{~kg}$ initially at rest explodes into 3 fragments with mass ratio 3:1:1. Two of fragments each of mass ' $m$ ' are found to move with a speed of $60 \mathrm{~m} / \mathrm{s}$ is mutually perpendicular directions. The velocity of third fragment is

149141 A particle of mass $4 \mathrm{~m}$ explodes into three pieces of masses $\mathrm{m}, \mathrm{m}$ and $2 \mathrm{~m}$. The equal masses move along $\mathrm{X}$-axis and $\mathrm{Y}$-axis with velocities $4 \mathrm{~ms}^{-1}$ and $6 \mathrm{~ms}^{-1}$ respectively. The magnitude of the velocity of the heavier mass is

149143 If a body losses half of its velocity on penetrating $3 \mathrm{~cm}$ in a wooden block, then how much will it penetrate more before coming to rest?

149139 A body of mass $2 \mathrm{~kg}$ moving with velocity of $6 \mathrm{~m} / \mathrm{s}$ strikes in elastically with another body of same mass at rest. The amount of heat evolved during collision is

149140 A body of mass $5 \mathrm{~m} \mathrm{~kg}$ initially at rest explodes into 3 fragments with mass ratio 3:1:1. Two of fragments each of mass ' $m$ ' are found to move with a speed of $60 \mathrm{~m} / \mathrm{s}$ is mutually perpendicular directions. The velocity of third fragment is

149141 A particle of mass $4 \mathrm{~m}$ explodes into three pieces of masses $\mathrm{m}, \mathrm{m}$ and $2 \mathrm{~m}$. The equal masses move along $\mathrm{X}$-axis and $\mathrm{Y}$-axis with velocities $4 \mathrm{~ms}^{-1}$ and $6 \mathrm{~ms}^{-1}$ respectively. The magnitude of the velocity of the heavier mass is

149143 If a body losses half of its velocity on penetrating $3 \mathrm{~cm}$ in a wooden block, then how much will it penetrate more before coming to rest?

149139 A body of mass $2 \mathrm{~kg}$ moving with velocity of $6 \mathrm{~m} / \mathrm{s}$ strikes in elastically with another body of same mass at rest. The amount of heat evolved during collision is

149140 A body of mass $5 \mathrm{~m} \mathrm{~kg}$ initially at rest explodes into 3 fragments with mass ratio 3:1:1. Two of fragments each of mass ' $m$ ' are found to move with a speed of $60 \mathrm{~m} / \mathrm{s}$ is mutually perpendicular directions. The velocity of third fragment is

149141 A particle of mass $4 \mathrm{~m}$ explodes into three pieces of masses $\mathrm{m}, \mathrm{m}$ and $2 \mathrm{~m}$. The equal masses move along $\mathrm{X}$-axis and $\mathrm{Y}$-axis with velocities $4 \mathrm{~ms}^{-1}$ and $6 \mathrm{~ms}^{-1}$ respectively. The magnitude of the velocity of the heavier mass is

149143 If a body losses half of its velocity on penetrating $3 \mathrm{~cm}$ in a wooden block, then how much will it penetrate more before coming to rest?

149139 A body of mass $2 \mathrm{~kg}$ moving with velocity of $6 \mathrm{~m} / \mathrm{s}$ strikes in elastically with another body of same mass at rest. The amount of heat evolved during collision is

149140 A body of mass $5 \mathrm{~m} \mathrm{~kg}$ initially at rest explodes into 3 fragments with mass ratio 3:1:1. Two of fragments each of mass ' $m$ ' are found to move with a speed of $60 \mathrm{~m} / \mathrm{s}$ is mutually perpendicular directions. The velocity of third fragment is

149141 A particle of mass $4 \mathrm{~m}$ explodes into three pieces of masses $\mathrm{m}, \mathrm{m}$ and $2 \mathrm{~m}$. The equal masses move along $\mathrm{X}$-axis and $\mathrm{Y}$-axis with velocities $4 \mathrm{~ms}^{-1}$ and $6 \mathrm{~ms}^{-1}$ respectively. The magnitude of the velocity of the heavier mass is

149143 If a body losses half of its velocity on penetrating $3 \mathrm{~cm}$ in a wooden block, then how much will it penetrate more before coming to rest?