A crate is sliding down an inclined ramp at a constant speed of 0.55 m/s. The vector sum of all the forces acting on this crate must point down the ramp. True or false?

False

Explanation:

Given: A crate is sliding down an inclined ramp at a constant speed of 0.55 m/s.

To find: whether the given statement is true or false

Solution:

As a crate is sliding down an inclined ramp at a constant speed of 0.55 m/s, net force is equal to 0 and so, the vector sum of all the forces acting on the crate can't point anywhere.

So, the given statement is false.