Nishi is driving his 2000kg car at 50 m/h. He diverts his attention from the road to message a friend and drives into the back end of the car in front of him, moving them both at speed of 40km/h. If the second car has a mass of 1000kg, how fast was it travelling prior to the collision?

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A: Solution

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A: Given that,Mass of swimmer, m1=60 kgMass of raft, m2=100 kgSpeed, V1=2.5 m/sInitial speed of raft=0…

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”