
Forces and Motion
Quiz by Tina Lewis
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11 questions
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- Q1A force is a push or a pull. How is it described?By its inertia.By its power.By the mass of an object on which it acts.By its strength and direction30s
- Q2Which type of force can act only when two objects touch each other?magneticfrictiongravitationalelectrical30s
- Q3Which is an example of a contact force?A paper clip being attracted to a magnet.A leaf falling from a tree.An electric charge jumping from a sweater to a person.A truck towing a car.30s
- Q4A magnetic force acts on an object, pulling it upward. Which of the following best describes the magnetic force?A frictional forceA non-contact forceA gravitational forceA contact force30s
- Q5After walking across a carpeted floor in socks, Ellie brings her finger near her sister and receives a shock. What does this demonstrate?Electrical forces require direct contact.Electrical forces can act at a distance.Frictional forces can act at a distance.Frictional forces require direct contact.30s
- Q6What happens when an unbalanced force acts on an object?The force is equal to the weight of the object.The motion of the object does not change.The motion of the object changes.The force must be greater than the reaction force.30s
- Q7What happens when a hammer strikes and exerts force on a nail?The nail moves at a constant speed.The nail creates friction with the hammer.The nail disappears into the wood.The nail exerts an equal and opposite force on the hammer.30s
- Q8A milk shake is sitting on the dashboard of a car that is stopped at a traffic light. As the car starts to move forward, the milk shake slides backward off the dashboard into your lap. Why does this happen?Magnetic forceDistance from the dashboard.FrictionInertia30s
- Q9An object moves through space with balanced forces acting on it. Which statement best describes the speed and direction of the object as long as the forces acting on it remain balanced?The speed will change but not as much as the direction changes.The speed and direction of the object will both change.The speed will change, but the direction will remain constant.The speed and direction of the object will remain constant.30s
- Q10Two people are pushing on a desk from opposite sides. The desk is not moving. Why is the desk not moving?Each person is pushing with different amounts of force causing the force to be balanced.Each person is pushing with the same amount of force causing the force to be balanced.Each person is pushing with the same amount of force causing the force to be unbalanced.Each person is pushing with different amounts of force causing the force to be unbalanced.30s
- Q11Which statement below explains the possibility for a distance versus-time graph to be a vertical line?It will be a vertical line when an object is moving 2 meters per second.It will be a vertical line when an object is moving at a constant speed.It is not possible.It will be a vertical line when an object is not moving.30s