A150-kg crate rests in the bed of a truck that slows from 50 km/h to a stop in 12 s. the coefficient of static friction between the crate and the truck bed is 0.655.(a) will the crate slide during the braking period? explain your answer.(b) give the range of stopping times for the truck that will prevent the crate from sliding.

Explanation:

Given

mass of crate=150 kg

time taken=12 s

coefficient of static friction

velocity of truck

deceleration truck experience while braking

v=u+at

maximum friction force truck can offer to block

actual Force experience by truck ma

Therefore crate will not slide during the braking

(b)range of time

therefore

v=u+at

For time greater than 0.93 s there will be no sliding

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