A truck loaded with sand accelerates along a highway. The driving force on the truck remains constant. What happens to the acceleration of the truck if its trailer leaks sand at a constant rate through a hole in its bottom?

a.
It decreases at a steady rate.



b.
It increases at a steady rate

c.
It increases and then decreases

d.
It decreases and then increases



e.
It remains constant.



QUESTION 31

A horizontal force of 150N is applied to a 51 kg crate on a level floor. The coefficient of static friction is is 0.5 and that of kinetic friction is 0.4. the frictional force acting on the crate is

a.
150 N

b.
200 N



c.
250 N



d.
500