Question

1. how does changing the direction of a force affect an objects motion?

has no effect
increases acceleration
decrease acceleration
changes the acceleration

Explanation:

According to Newton's second law, \( \vec{F} = m\vec{a} \), force (\( \vec{F} \)) and acceleration (\( \vec{a} \)) are vectors. Changing the direction of the force changes the direction of the acceleration (since mass \( m \) is scalar and positive). The magnitude of acceleration depends on force magnitude, but direction change of force directly changes acceleration's direction, thus changing acceleration. The option "Has no effect" is wrong (direction of force affects motion via acceleration direction). "Increases acceleration" and "Decrease acceleration" are wrong as they refer to magnitude; the question is about direction change, which changes acceleration (vector) by changing its direction.

Answer:

D. Changes the acceleration (assuming the last option is labeled D; if the last option's identifier is not given, based on the options, the correct one is "Changes the acceleration" among the four options provided, with the last option being "Changes the acceleration")