7th Grade Newton's Laws Ps.7.1.

Which of the following is Newton's First Law of Motion?

• For every action, there is an equal and opposite reaction.

• The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

• An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an external force.

• The force of gravity acts between all objects in the universe.

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DOK Level 1: Recall

What is the formula for calculating speed?

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DOK Level 1: Recall

Which type of force is responsible for an object sliding down a slope?

• Gravitational force

• Frictional force

• Magnetic force

• Electrical force

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DOK Level 1: Recall

If a car accelerates from 0 to 60 km/h in 5 seconds, what is its acceleration?

• 12 km/h²

• 60 km/h²

• 5 km/h²

• 0.2 km/h²

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DOK Level 2: Skill/Concept

Which of the following best describes velocity?

• The distance traveled per unit time

• The speed of an object in a specific direction

• The rate of change of speed

• The force applied to an object

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DOK Level 1: Recall

What happens to the motion of an object when friction is applied?

• It speeds up

• It slows down

• It changes direction

• It remains constant

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DOK Level 1: Recall

Which of the following is an example of deceleration?

• A car increasing its speed from 20 km/h to 40 km/h

• A ball rolling to a stop

• A plane taking off

• A cyclist maintaining a constant speed

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DOK Level 1: Recall

Calculate the velocity of a car that travels 150 km north in 3 hours.

• 50 km/h

• 150 km/h

• 450 km/h

• 50 km/h north

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DOK Level 2: Skill/Concept

Which of the following is an example of Newton's Third Law of Motion?

• A book resting on a table

• A rocket launching into space

• A car accelerating on a highway

• A ball falling to the ground

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DOK Level 1: Recall

What is the effect of gravity on an object in free fall?

• It causes the object to move at a constant speed

• It causes the object to accelerate downward

• It causes the object to decelerate

• It has no effect on the object

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DOK Level 1: Recall