Forces and Motion Test Review

Two shopping carts, one full of groceries and one empty, were pushed with different amounts of force so that they had the same constant velocity. Which shopping cart will require MORE force to stop and why?

• The empty shopping cart because it is moving faster than the full cart.

• The full shopping cart because it has more mass than the empty cart.

• The empty shopping cart because it has less mass than the full cart.

• The full shopping cart because it is moving slower than the empty cart.

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NGSS.MS-PS2-1

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The planets within the solar system all orbit the sun in elliptical paths at different orbital velocities.

Which argument BEST explains why the planets orbit the Sun in the Solar System?

• The Sun has a strong gravitational field that keeps all the planets in a fixed orbital pattern around it.

• The planets have a strong gravitational field that keeps the Sun in a fixed orbital pattern around them.

• The Sun has a strong magnetic field, and the planets have a common charge that keeps the planets in a fixed orbital pattern.

• The Sun has a strong magnetic field, and the planets have an opposite charge that keeps the planets in a fixed orbital pattern.

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NGSS.MS-ESS1-1

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Which is a result of the effect of gravity?

• Rocket engines can force objects into space.

• Air friction causes falling objects to slow down.

• Airplanes are able to fly without falling to the ground.

• Released objects always fall toward the center of the Earth.

Tags

NGSS.MS-PS2-2

Patrick was pushing a box across the floor of his room using 5 pounds of force. Then, a friend pushes in the opposite direction, also applying 5 pounds of force.

What will happen to the box and why?

• The box would not move because the forces applied to the box would be balanced.

• The box will be raised because when two equal forces act on an object, it will be raised up.

• The box would move in the direction of the force that was applied last because of Newton's First Law of Motion.

• The box will continue to move in the original direction that it was pushed because you cannot stop an object once it is in motion.

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NGSS.MS-PS2-1

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In which scenario is the object in equilibrium?

• the book on the table

• the car gaining speed

• the rope being pulled

• the weight being lifted

The graph shows information about Prabal's bicycle ride.

Which of the following BEST describes Prabal's acceleration?

• Prabal has the lowest average acceleration from point A to B.

• Prabal has the highest average acceleration from point D to E.

• Prabal has the lowest average acceleration from point C to D.

• Prabal's average acceleration from point B to C is about the same as from point C to D.

Tags

NGSS.MS-PS3-1

Luke and Sarah have an assignment to construct an experiment that shows how the amount of force needed to accelerate an object is proportional to its mass.

Which answer would BEST describe the motion of the cart, assuming there is no friction?

• The cart will move to the left at a constant speed.

• The cart will move to the right at a constant speed.

• The cart will accelerate to the left.

• The cart will accelerate to the right.

Tags

NGSS.MS-PS2-2

The force of 100 N is applied to the front a truck.

Which of the following would balance the force and cause the truck to remain still?

• applying 100 N in the opposite direction because the forces are of equal magnitude and would balance each other out

• applying 100 N in the same direction because the forces are of equal magnitude and would balance each other out

• applying 50 N in the opposite direction because the forces are of differing magnitude and would balance each other out

• applying 50 N in the same direction because the forces are of differing magnitude and would balance each other out

Tags

NGSS.MS-PS2-2

The illustration shows people pushing farm carts of equal mass. Each person is pushing with an equal force (F) in the direction shown.

How does the acceleration of Cart A compare to the acceleration of Cart B?

• It is twice the magnitude, but in the opposite direction of cart B’s acceleration.

• It is twice the magnitude and in the same direction as cart B’s acceleration.

• It is the same magnitude, but in the opposite direction of cart B’s acceleration.

• It is the same magnitude and in the same direction as cart B’s acceleration.

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NGSS.MS-PS2-2

The graph shows the information about Bob’s morning walk.

Which of the following BEST describes Bob’s motion?

• Bob has the lowest average velocity from point A to B

• Bob has the highest average velocity from point A to B.

• Bob has the highest average velocity from point D to E.

• Bob’s average velocity from point B to C is about the same as it is from point C to D.

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