Answer:

object accelerates not due to the change in its speed but to the change in the direction of its velocity. B. The whirling object accelerates due to the change in speed only.

C. The whirling object accelerates due to the change in position.

D. The whirling object accelerates due to the increasing force acting on it.

9. In which of the following statements shows that work is done.

A. A girl pushing her cart to a distance of 5 meters

B. A girl dancing.

C. A girl holding her bag k

D. A girl walking 10 km away from home.

10. In order for an object to move in a circular path at a constant speed, which of the following conditions must be satisfied?

A. A force must be applied once to start circular motion, then the object will continue in a circular path.