A. 125kgm/s¹
B. 25kgm/s¹
C. 15kgm/s¹
D. 0kgm/s¹
Correct Answer:
Option B – 25kgm/s¹
Explanation
Impulse = momentum
Impulse = Force (f) × time (t)
Momentum = mass (m) × velocity (v)
∴ Ft = Final momentum – initial momentum
FT = mv – mu
Since it is initially at rest u = 0
∴ 5 × 5 = mv − m(0)
25 = mv
∴ Final momentum = 25kgms−¹
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