acceleration is ________ proportional to mass

• directly

• inversely

• negatively

• positively

Newton is the unit for ______.

• mass

• acceleration

• inertia

• force

kilogram is the unit for ________.

• mass

• force

• acceleration

• inertia

Newton's first law of motion states that an object at rest will continue to stay at rest unless there is a/n ___________ acted on the object.

• balanced force

• unbalanced force

• acceleration

• mass

The more force that you applied the more ________________ an object has.

• acceleration

• inertia

• mass

What is the mathematical expression of the second law of motion?

• $F=\frac{m}{a}$

• $F=ma$

• $F=m+a$

How much force is required to accelerate a 40 kg car at $5\ \frac{m}{s^2}$    ?

• 35 N

• 45 N

• 8 N

• 200 N

What is the mass of a car toy that accelerates 3  $\frac{m}{s^2}$  with 30 N?

• 90 kg

• 25 kg

• 10 kg

How much acceleration will produce in a 250 kg car with 500 N?

• $0.5\ \frac{m}{s^2}$

• $2\ \frac{m}{s^2}$

• $250\ \frac{m}{s^2}$

How does hitting the baseball show third law?

• Because we hit the ball

• Because the bat is blue

• We made good contact

• Because swinging the bat is the action, and the baseball in motion is the reaction