Correct Answer - Option 2 : 2.5 m/s
Concept:
Impulse is equal to change in momentum
F × t = m (v – u)
Where, v = velocity after the impact, u = velocity before the impact, t = fraction of time during which force is applied
Calculation:
Given, F = 50 N, t = 10 ms = 10 × 10-3 s
50 × 10 × 10-3 = 0.20 × (V – 0)
v = 2.5 m/s