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SITUATION: a car was heading towards a wall it applied 140N of force in it's brakes until it comes to stop

1. how long was the time it look for the car to stop completely

2. how much impulse was experienced by the car during the application of brakes?​


SITUATION A Car Was Heading Towards A Wall It Applied 140N Of Force In Its Brakes Until It Comes To Stop1 How Long Was The Time It Look For The Car To Stop Comp class=

Sagot :

Answer:

1. 10s

2.1200 N.S

Explanation:

1.) According to the figure we can know

when, t =10Cs V=0

so after 10s the car come to stop completely

2,. According theorem of momenturm

so, ft =120 x 10 =120 N.S

the impulse is 1200 NS