there are cars with masses 4kg and 10g respectively that are at rest. A car having the mass 10kg moves towards the east with a velocity of 5m.s-1. Find the velocity of the car with respect to ground
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Answer:
m1 = 4 kg
m2 = 10 kg
v1 = ?
v2 = 5 m.s-1
We know from the law of conservation of momentum that,
Pinitial = 0, as the cars are at rest
Pfinal = p1 + p2
Pfinal = m1.v1 + m2.v2
= 4 kg.v1 + 10 kg.5 m.s-1
Pi = Pf
0=4 kg.v1+50 kg.m.s-1
v1 = 12.5 m.s-1
Explanation:
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