7). Stopping is an acceleration.
2nd law . . . . . f = m a
Bigger mass needs more force.
Bowling ball has more mass than a golf ball.
9). 2nd law . . . . . f = m a
It doesn't say anything about where the force comes from,
only the size of the force. A child, dog, bird, adult, or
tow-truck have to use the same amount of force to produce
the same result.
10). 2nd law . . . . . f = m a
More acceleration requires more force.
