A car accelerates from rest under a net force. What equation best describes the relationship between the acceleration of the car, the net force applied, and the mass of the car?

• E = mc^2

• a = F/m

• F = 1/2mv^2

• F = ma

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NGSS.MS-PS2-2

When pushing a shopping cart, what is the SI unit of the force you apply?

• meter (m)

• newton (N)

• joule (J)

• kilogram (kg)

A car accelerates from rest under a constant force. What describes the relationship between the force applied to the car, its mass, and its acceleration?

• Mass equals force times acceleration

• Force equals mass times acceleration

• Force equals mass divided by acceleration

• Acceleration equals force divided by mass

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NGSS.MS-PS2-2

A car has a mass of 5 kg and is accelerating at a rate of 2 m/s^2. What is the force acting on the car?

• The force acting on the car is 7 N

• The force acting on the car is 15 N

• The force acting on the car is 10 N

• The force acting on the car is 3 N

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NGSS.MS-PS2-2

Imagine you're pushing a shopping cart with a certain mass. How does the force you apply relate to the cart's acceleration?

• F = m^2a

• F = 1/2ma

• F = ma

• F = m/a

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NGSS.MS-PS2-2

Imagine you're packing for a trip to the moon. What is the difference between the mass of your suitcase and its weight?

• Mass is the amount of matter in your suitcase, while weight is the force exerted on your suitcase due to gravity.

• Mass is the force exerted on your suitcase due to gravity, while weight is the amount of matter in your suitcase.

• Mass is measured in pounds, while weight is measured in kilograms.

• Mass and weight are the same thing.

How does Newton's 2nd Law apply when pushing a shopping cart?

• It has no application in everyday situations

• It explains how the force applied to the shopping cart affects its acceleration and movement.

• It only applies to shopping carts in motion

• It only applies to very heavy shopping carts

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NGSS.MS-PS2-2

While observing a car accelerating on a highway, what are the limitations of applying Newton's 2nd Law to describe its motion?

• Applicability to non-inertial reference frames

• Assumption of variable mass and variable acceleration

• Applicability only to inertial reference frames, and the assumption of constant mass and constant acceleration.

• Only valid for objects in motion

When a soccer player kicks a ball, how does Newton's 2nd Law relate to the ball's motion?

• Newton's 2nd Law explains how the force applied by the player affects the ball's acceleration, which relates to its resistance to changes in motion.

• The ball's inertia is not affected by the force or acceleration from the kick

• Newton's 2nd Law has no relation to the concept of inertia when the ball is kicked

• Inertia is only related to the mass of the soccer ball

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NGSS.MS-PS2-2

Provide an example of a problem-solving using Newton's 2nd Law.

• Calculating the force required to lift an object vertically

• Determining the weight of an object on the moon

• Measuring the speed of a moving train

• An example of a problem-solving using Newton's 2nd Law is calculating the force required to accelerate a car of known mass at a certain rate.

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NGSS.HS-PS2-1