A linear spring has a constant of 377.16 N/m. How much force is necessary to stretch it 0.39 m?

you cant move and you feel like someones pushing you down onto your bed it can feel like you want to get up but you just can't it can be extremely scary

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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temp rises, and expansion

the total distance traveled by the car is

30km + 49km = 79 km .