Question

A car of mass 900 kg is traveling at a speed of 30 metre per second, against a force of 2000

newton is applied on it,

(a) calculate the momentum of the car

(b) calculate the kinetic energy of the car

(c) what form of energy is in the fuel used by the engine to drive the car?

(d) What is the work done by the force of gravity on the car while moving?​

Answer 1

Answer:

momentum=M×v=900×2000=1800000

kinetic energy=1/2×m×v×v= 1/2×900×900=8100/2=4050

chemical energy is used as a fuel .

work done by gravity is 0 because work=F×s×cos@ and here cos@=90° and cos90°=0 so over all work is 0

Explanation:

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