Calculate the momentum of a truck of mass 25000 kg when
i) it is at rest.
ii) it is moving with a uniform velocity of 90 km/h.
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Momentum, p = Mass, m x Velocity, v
p = m x v
(i) m = 25000 kg
v = 0
p = 25000 x 0
p = 0
Momentum = 0 N/m
(ii) m = 25000 kg
v = 90 km/hr = 25 m/s
p = 25000 kg x 25 m/s
p = 625000 N/m
Momentum = 625000 N/m
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