5S Ch. 5 Force & Motion

1. The force of attraction between two objects_____.

• a. Force
• b. Friction
• c. Gravity

2. A push or pull that acts on an object _____.

• a. Force
• b. Friction
• c. Gravity

3. The force that results when two materials rub against each other _____.

• a. Force
• b. Friction
• c. Gravity

4. A force can make an object slow down or stop.

• True
• False

5. You weigh less on Earth than a spaceship orbiting 800 kilometers about Earth.

• True
• False

7. The rate at which the speed or the direction of motion of an object changes over time _____.

• a. acceleration
• b. inertia
• c. uniform motion

8. The tendency of an object to resist any change in motion _____.

• a. acceleration
• b. inertia
• c. uniform motion

9. Motion where the speed and direction do not change _____.

• a. acceleration
• b. inertia
• c. uniform motion

10. When a bike goes around a curve at the same speed as it was moving straight, that's uniform motion.

• a. true, bike's speed and direction didn't change
• b. true, bike's speed and direction did change
• c. false, bike's speed and direction didn't change
• d. false, bike's speed didn't change, but the direction did

11. You need the same amount of force to throw a basketball as you do a golf ball.

• a. true, they have the same mass
• b. true, they need the same amount of force, no matter their mass
• c. false, they have different mass, so force needed is different
• d. false, they have same mass, so force needed is different