Physics - Multiple choice
posted by Casey .
An object is moving in a circle at a constant speed. From this you can be certain that
a) there are at least two forces acting on the object, which balance each other.
b) there are at least two forces acting on the object, which do not balance each other
c) there must be more than two forces acting on the object.
d) there is at least one force acting on the object.
My answer: I believe it is c because balanced forces would cause the speed to remain constant. Is this right?
Correction: I believe it to be (a) not (c)