Answer: a
Explanation:
when a car dives on a road it a makes friction but it need something to push it or start it which is the balloon in this example
(sorry if im wrong)
Normal force is mass x gravity, so mass x 9.81
Answer:
So as KE becomes 4times , Momentum will increase by 2 times.
Answer:
B. A object in motion stays in motion, and an object at rest stays at rest unless acted upon by a net force.