Chapter 2 Test - The Laws of Motion

An arrow can be used to represent a force. The length of the arrow represents _____.

• direction of the force

• mass of the force

• strength of the force

• acceleration of the force

Forces that are equal in size but opposite in direction are ____.

• balanced forces

• inertial forces

• frictional forces

• net forces

Tags

NGSS.MS-PS2-1

The relationship among force, mass, and acceleration is stated in ____.

• the law of conservation of momentum

• Newton's second law of motion

• Newton's first law of motion

• Newton's third law of motion

Tags

NGSS.MS-PS2-2

When two birds are pulling on a worm and the worm moves toward the first bird, you know that the forces are ____.

• long-range

• unbalanced

• action-reaction

• balanced

Tags

NGSS.MS-PS2-2

Which of the following is the equation for momentum?

• p = m / v

• p = mv

• p = ws

• p = v / m

Tags

NGSS.HS-PS2-2

Fred (m = 67 kg) foolishly attempts to jump from a canoe (m = 45 kg) to the dock. If he jumps forward with a speed of 3.3 m/s, how fast will the canoe move backward?

• 2.2 m/s

• 4.9 m/s

• 22 m/s

• 49 m/s

Tags

NGSS.MS-PS2-1

Whenever an object exerts a force on another object, the second object exerts a force of the same magnitude, but in the _____ direction to that of the first object.

• opposite

• right angle

• same

• vertical

Tags

NGSS.MS-PS2-1

The force you have to overcome to start an object moving

is ____.

• rolling friction

• sliding friction

• static friction

• fluid friction

A 300-N force acts on a 25-kg object. The acceleration of the object is ____.

• 7,500 m/s/s

• 25 m/s/s

• 300 m/s/s

• 12 m/s/s

Tags

NGSS.MS-PS2-2

The unit of force is ____.

• m/s

• the joule

• the hertz

• the newton