Which of the following statements are true about the motion of an object? (a)To

Question

Which of the following statements are true about the motion of an object?

(a)To change the magnitude of the momentum you need to apply a force parallel to the momentum (either in the same direction as the momentum or the opposite direction).

(b)To make an object turn to the left, something has to exert a force to the right on the object.

(c)When an object moves at constant speed along a curving path, the net force on the object must act straight outward from the center of the kissing circle.

(d)A force perpendicular to the momentum changes the direction of the momentum but not its magnitude.

I believe b is incorrect.

Explanation / Answer

Here ,

we can change the magnitude of momentum by applying force in any direction other perpendicular to the motion.

the true statements are :

(c)When an object moves at constant speed along a curving path, the net force on the object must act straight outward from the center of the kissing circle.

(d)A force perpendicular to the momentum changes the direction of the momentum but not its magnitude.

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