Question

A l0-kg box of candies starts at rest on the top of a 2-m long ramp and slides down to the bottom in 3 seconds
1. What is the acceleration of the box?
2. What is the net force that acts on the box along the ramp?​

Answer 1

Answer:

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Explanation:

Suppose that you have a crate that has been mistakenly placed near the top of a long ramp, and it starts sliding down that ramp. How about calculating its acceleration down the incline?

The object is sliding down the ramp — you’re not pushing it — which means the force of kinetic friction is opposing (not adding to) the component of gravity along the ramp. So the net force on the crate is

image1.png

Because a = F/m, the acceleration of the crate is

image2.png

Notice that the crate’s mass does not affect its acceleration because mass cancels out of the final equation.