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
