The wheel of a moving vehicle possesses :

1. rotational kinetic energy
2. translational kinetic energy
3. vibrational kinetic energy
4. both rotational and translational kinetic energy

The velocity of a moving cart is reduced to $\dfrac{1}{3}$rd the initial velocity. Its kinetic energy is reduced by :

1. $\dfrac{1}{2}$

2. $\dfrac{1}{3}$

3. $\dfrac{1}{6}$

4. $\dfrac{1}{9}$

The kinetic energy K and momentum p are related as:

1. $p = \sqrt{2K}$

2. $p = \sqrt{2gK}$

3. K = $\dfrac{p^2}{2m}$

4. $K = \sqrt{2mp}$

On doubling the velocity of a moving body, the quantity which gets double is:

1. acceleration
2. momentum
3. kinetic energy 
4. weight