PS Semester Quiz

When Luna pushes against a wall, the wall pushes back with an equal force. This is an example of:

• Objects at rest stay at rest

• Force equals mass times acceleration

• Every action has an equal and opposite reaction

• Energy can neither be created nor destroyed

Mason is trying to push a heavy box across the floor. Which of the following best describes the relationship between the mass of the box and the force Mason needs to apply to move it?

• The greater the mass, the less force is needed

• The greater the mass, the more force is needed

• Mass and force are not related

• Force decreases as mass increases

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NGSS.MS-PS2-2

Arjun is driving his car and wants to understand the difference between speed and velocity. What is the main difference?

• Speed is faster than velocity

• Velocity includes direction, while speed does not

• Speed is measured in meters, velocity in seconds

• Velocity is always greater than speed

Sophia and Ethan are watching a rocket launch. They wonder what the force is called that propels the rocket upward:

• Lift

• Drag

• Thrust

• Gravity

During a science project, Luna launches a model rocket. At what point does the rocket have maximum gravitational potential energy during its flight?

• At launch

• Midway through its ascent

• At its highest altitude

• During descent

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Michael and Evelyn are pushing two different carts with the same amount of force. How does the mass of each cart affect its acceleration?

• Greater mass leads to greater acceleration

• Greater mass leads to less acceleration

• Mass has no effect on acceleration

• The relationship depends on the type of force

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Jackson is pushing a cart and wants to increase its speed at the same rate as before. How does adding more weight to the cart affect the force Jackson needs to apply?

• Less force is needed

• More force is needed

• The same force is needed

• Force becomes negative

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As Avery watches a rocket launch, which of the following best describes the energy transformation occurring as the rocket lifts off?

• Kinetic energy to potential energy

• Thermal energy to kinetic energy

• Chemical potential energy to kinetic and thermal energy

• Gravitational potential energy to chemical energy

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• This is an example of Newton's First Law.
• This is an example of Newton's Second Law.
• This is an example of Newton's Third Law.

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• This is an example of Newton's First Law.
• This is an example of Newton's Second Law.
• This is an example of Newton's Third Law.

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