Question

Unbalanced forces cause a change in speed,motion,or both. which must have an unbalanced force acting on it?


A.a stopped car
B.a ball on the floor
C.a ball rolling down a hill
D.a horse running at a constant speed

Answer 1

C) is u r answer.....

Answer 2

C.a ball rolling down a hall
bcz there is two opposite forces acting on it.These forces are:hitting of ball from a side
frictional force acting on it