1. Which property of an object determines its inherent resistance to a change in its state of motion?
- A. Its speed
- B. Its mass
- C. Its shape
- D. Its direction of travel
2. A student applies the same amount of force to push a bowling ball and a soccer ball, both initially at rest. Which statement accurately describes the resulting motion?
- A. The bowling ball will accelerate faster because it is heavier.
- B. The soccer ball will accelerate faster because it has less mass.
- C. Both balls will accelerate at the same rate because the force is the same.
- D. Neither ball will move because the force is not strong enough to overcome their rest state.
3. An object with a very small mass is sitting at rest. What can be predicted about its response to an external force?
- A. It will strongly resist any change in its motion.
- B. It will require a very large force to start moving.
- C. It will easily change its state of motion.
- D. It will remain at rest regardless of the force applied.
4. Imagine two asteroids of different masses are floating in space, initially at rest. If an identical rocket thruster is attached to each and fired for one second, what will be the outcome?
- A. The asteroid with less mass will end up moving faster.
- B. The asteroid with more mass will end up moving faster.
- C. Both asteroids will move at the same final speed.
- D. Both asteroids will spin in place but not move forward.
5. The tendency of a massive object, like a large ship, to continue moving in a straight line or to remain at rest is a direct consequence of its...
- A. volume.
- B. high mass.
- C. streamlined shape.
- D. surface temperature.
6. What is the scientific definition of an object's mass?
- A. The force of gravity exerted on the object.
- B. The amount of matter the object contains.
- C. The volume that the object occupies.
- D. The object's ability to attract other objects.
7. Which property of an object is a direct measure of its inertia?
- A. Volume
- B. Weight
- C. Mass
- D. Density
8. A large, stationary freight train is much harder to start moving than a small, stationary bicycle. Which scientific principle best explains this difference?
- A. The train has a larger surface area, creating more air resistance.
- B. The bicycle's wheels allow it to start moving with less energy.
- C. The train has significantly more mass and therefore greater inertia.
- D. The train is made of metal, which has a higher magnetic attraction to the rails.
9. An astronaut takes a hammer from Earth to the Moon, where gravity is much weaker. Which property of the hammer remains the same in both locations?
- A. Its mass
- B. Its weight
- C. Its acceleration when dropped
- D. Its potential energy at a height of one meter
10. Two spheres are the exact same size, but one is made of solid steel and the other is made of hollow plastic. Which statement correctly compares their inertia?
- A. Both spheres have the same inertia because they have the same volume.
- B. The plastic sphere has more inertia because it is less dense.
- C. The steel sphere has more inertia because it has a greater mass.
- D. It is impossible to determine their inertia without knowing their weight.