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These questions !plz !! i need help!!!
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These questions !plz !! i need help!!!

These questions !plz !! i need help!!!-example-1
User Arikon
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12 votes

(6) Wagon B is at rest so it has no momentum at the start. If v is the velocity of the wagons locked together, then

(140 kg) (15 m/s) = (140 kg + 200 kg) v

==> v ≈ 6.2 m/s

(7) False. If you double the time it takes to perform the same amount of work, then you halve the power output:

E / (2t ) = 1/2 × E/t = 1/2 P

User RootShiv
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