A constant force of 5N acts for 5 seconds on a mass of 5kg initially at rest. Calculate the final momentum
The correct answer is: B
Explanation
Impulse = momentum
Impulse = Force (f) ร time (t)
Momentum = mass (m) ร velocity (v)
โด Ft = Final momentum - initial momentum
FT = mv - mu
Since it is initially at rest u = 0
โด 5 ร 5 = mv โ m(0)
25 = mv
โด Final momentum = 25kgms\(^{-1}\)
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