Test: Chapter 6 - Newton’s Second Law (12/14)

(True or False.) An object's velocity can be changed by changing its speed, its direction, or both.

A change in velocity over time is called ___________.

• speed
• force
• acceleration
• direction

The increasing speed of a falling object is caused by _____________.

• force
• mass
• speed
• gravity

Tags

NGSS.MS-PS2-4

An object's velocity can be changed by changing its:

• speed

• direction

• color

• mass

Tags

NGSS.MS-PS3-1

A 20 kg bike accelerates at 10 m/s². What is the force acting on the bike?

Tags

NGSS.MS-PS2-2

When force is 20 N, mass is 5 kg, what is acceleration?

F = ma

• 25 m/s²

• 5 m/s²

• 100 m/s²

• 4 m/s²

Tags

NGSS.MS-PS2-2

If a force of 50 Newton's was applied to an object with a mass of 500 grams, what will the object's acceleration be?

• 10 m/s²

• .1 m/s²

• 100 m/s²

• 1 m/s²

Tags

NGSS.MS-PS2-2

Jenny applies a 60 N force to a 20 Kg cart, what is the acceleration of the cart if friction can be neglected?

• 1200 m/s²

• 0.33 m/s²

• 20 m/s²

• 3 m/s²

Tags

NGSS.MS-PS2-2

An object accelerates 5 m/s² when a force of 20 newtons is applied to it. What is the mass of the object?

• 4 kg

• 20 kg

• 0.5 kg

• 2 kg

Tags

NGSS.MS-PS2-2

Which of these best states Newton's Second Law?

• The greater the mass of an object the greater the force needed to change its motion.

• The greater the mass of an object the less force needed to change its motion.

• The mass of an object does not effect the force needed to change its motion

Tags

NGSS.MS-PS2-2