Question

200 kg car traveling at 10 m/s hits a tree and is brought to rest in 0.10s. What is the magnitude of the average force acting on the car to bring it to rest?

Answer 1

Answer:

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Explanation:

Given: mass = 1200 kg,  vo=10m/sec , time = .1 sec

vf=vo+a⋅t  

0=10+a⋅.1  

a = -100 m/sec

F = m x a

F = 1200 x -100, ==> F = -120000 N (- sign indicted in the opposite direction)

>>>>>> F = -120000 N (- sign indicted in the opposite direction)

Answer 2

Answer:

Explanation:

1.2×10*2