Equation of Motion

Q.

Two bodies with kinetic energy in the ratio of 4 : 1 are moving with equal linear momentum. The ratio of their masses is

1. 1 : 2

2. 1 : 1

3. 4 : 1

4. 1 : 4

Q.

A body of mass 2 kg is dropped from a building of height 5m. The maximum kinetic energy body can attain is

1. 150 J

2. 200 J

3. 50 J

4. 100 J

Q. A body of mass 2 kg is dropped from a building of height 5 m. The maximum kinetic energy the body can attain is ___ J.

1. 10
2. 50
3. 100
4. 200

Q. The kinetic energy of a body of mass $0.5kg$ and momentum $30kgm{s}^{-1}$ is ___ J.

1. 4500
2. 1500
3. 900
4. 450

Q. The momentum of a body is numerically equal to its kinetic energy. The velocity of the body is

1. 1 ms${}^{-1}$
2. 4 ms${}^{-1}$
3. 2 $m{s}^{-1}$
4. 8 ms${}^{-1}$