Answer:
Explanation:
The two cars are under an uniform linear motion. So, the distance traveled by them is given by:
is the same for both cars when the second one catches up with the first. If we take as reference point the initial position of the second car, we have:
We have 
. Thus, solving for t:
Answer:
Gravity is the centripetal force when the moon orbits the earth.
Friction- the external force that acts on objects and causes them to slow down when no other external force acts upon them.
Freezing.................
