Unit 4 Review

Which mass is undergoing the greatest amount of acceleration?

• 1 kg subjected to a force of 1 N

• 1 kg subjected to a force of 100 N

• 100 kg subjected to a force of 1 N

• 100 kg subjected to a force of 100 N

Tags

NGSS.MS-PS2-2

The seat belt stopped Kanada’s forward motion that was caused by (a)   .

• friction

• gravity

• inertia

• vibrations

A bowling ball sitting motionless on a table exerts a downward force on the table. The force exerted by the table must be (a)   .

• equal to the force of the ball

• continually changing with the ball

• greater than the force of the ball

• less than the force of the ball

Tags

NGSS.HS-PS2-1

The action of swimmers using their arms to propel themselves by pushing water backwards through the water is an example of what law?

• Newton’s first law of motion

• Newton’s third law of motion

• law of conservation of linear momentum

• law of conservation of angular momentum

Tags

NGSS.MS-PS2-1

When a bird flies, its wings push air downward. As a result, the air pushes back upward on the bird. Which law of motion MOST applies to the way the wings of a bird beat?

• A. All forces act in action-reaction pairs.

• B. The rate of acceleration of an object depends on the amount of force applied.

• C. Objects in motion tend to remain in motion until acted upon by another force.

• D. An unbalanced force acting on an object equals the mass of the object multiplied by its acceleration.

Tags

NGSS.MS-PS2-1

A 3.0 N force and a 5.0 N force are acting in opposite directions on the same 5.0 kg ball. What is the magnitude of the acceleration of the ball?

• 0.40 m/s²

• 0.63 m/s²

• 1.6 m/s²

• 2.5 m/s²

Tags

NGSS.MS-PS2-2

A horizontal force of 24 N is being applied to a box on a level surface. The box is accelerating at the rate of 2.0 m/s² against a frictional force of 14 N. What is the mass of the box?

• 5.0 kg

• 7.0 kg

• 12 kg

• 19 kg

Tags

NGSS.MS-PS2-2

During a classroom discussion on motion, the teacher instructs the class to write down something that specifically addresses Isaac Newton’s second law of motion. Which of these responses would BEST represent the second law?

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

• Every object continues at rest unless acted on by outside forces.

• Acceleration depends on the force applied and the mass of an object.

• Every object attracts every other object and the force is proportional to their masses.

Tags

NGSS.MS-PS2-2

Newton’s first law of motion states that an object at rest will stay at rest unless acted upon by an outside force. Which activity is an example of this law?

• A. A football is kicked off a tee.

• B. A baseball player slides into second base.

• C. A floating stick is carried over a waterfall.

• D. A bicycle travels faster as it goes downhill.

A 60-kg man and a 25-kg boy, both on roller skates, push off of each other using their hands. Which of these describes the motion of the two people?

• The man moves farther and faster than the boy.

• The boy moves farther and faster than the man.

• The man moves farther but the same speed as the boy.

• The boy moves faster but the same distance as the man.

Tags

NGSS.MS-PS2-1