Question
Asked Dec 17, 2019
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A large crate of mass m is placed on the back of a truck but
not tied down. As the truck accelerates forward with an acceleration
a, the crate remains at rest relative to the truck. What
force causes the crate to accelerate forward?

(a) the normal force 

(b) the force of gravity

(c) the force of friction between the crate and the floor of the truck

(d) the “ma” force

(e)none of these

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Expert Answer

Step 1

Frictional force opposes the relative lateral motion when the surfaces of two objects which are in contact. The direction of fr...

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Science

Physics

Newtons Laws of Motion

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