1))Calculate the momentum of a toy car of mass 200 g moving with a speed of 5m/s.
(2)What is the change in momentum of a car weighting 1500 kg when it's speed increases from 36 km/h to 72 km/h uniformly?
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Please help....
(2)What is the change in momentum of a car weighting 1500 kg when it's speed increases from 36 km/h to 72 km/h uniformly?
#☺5pts
Please help....
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1) p=mv
mass= 200g= 200/1000= 0.2 kg
p= 0.2×5
= 1 kgm/s
2) mass= 1500kg
initial velocity = 36km/h= 36×5/18= 10m/s
Final velocity = 72 km/h= 72×5/18= 20m/s
therefore,
Initial momentum= 1500×10=15000kgm/s
Final momentum= 1500×20= 30000kgm/s
The change momentum
= m(v-u)
= 1500(20-10)
= 1500×10
= 15000kgm/s
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