Three carts P, Q and R move on a straight track

PHYSICS · Single correct · CBSE · Physics · Work and Energy · Work and Energy

Problem

Three carts P, Q and R move on a straight track. P: mass

1\,\text{kg}

, speed

10\,\text{m/s}

Q: mass

2\,\text{kg}

, speed

7\,\text{m/s}

R: mass

4\,\text{kg}

, speed

5\,\text{m/s}

Arrange the carts in ascending order of kinetic energy. (a)

P < Q < R

(b)

R < Q < P

(c)

Q < P = R

(d)

P = Q < R