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Given :
Mass ( m ) = 5 kg
To find :
i ) acceleration.
ii ) Force
iii )Change in momentum in 2 s
Formulas :
Acceleration = velocity/time
Force = mass × acceleration
Momentum = mass × velocity
Solution :
Acceleration = velocity/time
a = 5 - 0 / 2 - 0
a = 5/2
a = 2.5 m s^-2
Force = mass × acceleration
F = 5 × 2.5
F = 12.5 N
Initial momentum = p(i) = 5 × 0 = 2
Final momentum = p(f) = 5 × 5 = 25 kg m/s
Change in momentum = p(f) - p(i)
∆p = 25 - 0
∆p = 25 kg m/s .
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