SPS8 Review

Unbalanced forces cause an object to _____.

• remain motionless

• be in motion

• speed up, slow down, or change direction

• fall over

Tags

NGSS.MS-PS2-2

When a magician yanks the tablecloth off of a table without knocking over the dishes on the table, he's demonstrating Newton's _____ Law of Motion.

• 1st
• 2nd
• 3rd
• 4th

Tags

NGSS.MS-PS2-1

Newton's First Law of Motion is also known as the Law of _____.

• Inertia
• Conservation of Mass
• Action and Reaction
• Mass and Acceleration

Which of Newton's Laws best explains how a rocket can accelerate by pushing against its own burning fuel?

• Newton's First Law
• Newton's Second Law
• Newton's Third Law
• None of these

Newton's Third Law says that forces _____.

• always come in equal and opposite pairs
• always come in groups of three
• are always balanced
• are never balanced

Tags

NGSS.MS-PS2-1

A book resting on a desk is an example of _____.

• balanced forces

• unbalanced forces

• centrifugal forces

• positive net force

A car starts from rest at a stop light and reaches 20 m/s in 3.5 s. Determine the acceleration of the car.

• 2.2m/s²
• 7.0m/s²
• 5.7m/s²
• 70m/s²

Tags

NGSS.HS-PS2-1

Find the velocity of a truck that travels 75 miles north in 2.5 hours.

• 187.5 mph north
• 30 mph north
• 300 mph north
• 200 mph north

When are you undergoing an acceleration in a car? 

• speed up
• slow down
• make turns
• All of the above 

Tags

NGSS.MS-PS2-2

Why does a car accelerate as it round a corner at a constant speed?

• Its direction changes
• It doesn't
• It slows down
• Its speeds up