Question

A net force must be acting when an object Choose one or more: A. changes direction but not speed. B. changes both speed and direction. C. accelerates. D. changes speed but not direction.

Answer 1

Answer:

C. accelerates.

D. changes speed but not direction.

Explanation:

• When the body accelerates, the net force increases, when changes speed, acceleration changes and force as well.

${ \rm{force = mass \times acceleration}}$

» So, the force is determined by acceleration.

${ \rm{force = mass \times ( \frac{ \delta \: speed}{time}) }}$

» Also force is determined by change in speed