If the kinetic energy of a body increases by \(0.1\%,\) the percent increase of its momentum will be 
1. \(0.05\%\)
2. \(0.1\%\)
3. \(1.0\%\)
4. \(10\%\)

A particle of mass m moving with velocity u makes an elastic one-dimensional collision with a stationary particle of mass m. They are in contact for a very short time T. Their force of interaction increases from zero to F₀ linearly in time T/2 and decreases linearly to zero in further time T/2. The magnitude of F₀ is:

1. mu/T

2. 2mu/T

3. mu/2T

4. None of these

A force of 50 dynes is acted on a body of mass 5 g which acts for an interval of 3 seconds, then impulse is 

1. 0.15 × 10^–3 N-s

2. 0.98 × 10^–3 N-s

3. 1.5 × 10^–3 N-s

4. 2.5 × 10^–3 N-s

In an explosion a body breaks up into two pieces of unequal masses. In this 

(1) Both parts will have numerically equal momentum

(2) Lighter part will have more momentum

(3) Heavier part will have more momentum

(4) Both parts will have equal kinetic energy