1.3 Forces and Newton's Laws

What law is best described by inertia?

• 1st
• 2nd
• 3rd

Pushing a child on a swing is easier than pushing an adult on the same swing, because the adult has more mass and requires more force to accelerate.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law

Tags

NGSS.HS-PS2-1

What is the tendency of an object to resist a change in motion?

• coffee
• motion
• inertia
• gravity

Tags

NGSS.MS-PS2-2

"For every action, there is an equal and opposite reaction."

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• Newton's 4th Law

Tags

NGSS.MS-PS2-1

Force = Mass x Acceleration

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• Newton's 4th Law

Tags

NGSS.MS-PS2-2

"An object in motion (or at rest) will to stay in motion (or at rest) until an outside force acts upon it."

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• Newton's 4th Law

What is the net force needed to accelerate a 66 kg skier at 2 m/sec²?

• 132 N
• 33 N
• 58.8 N
• .030 N

Tags

NGSS.MS-PS2-2

A net force of 250 N is applied to an object that accelerates at a rate of 5 m/sec².  What is the mass of the object?

• 50 kg
• 245 kg
• .02 kg
• 25.5 kg

Tags

NGSS.MS-PS2-2

What are the units of Force?

• kg*m/sec
• kg*m
• N
• N*sec

What is the unit for mass?

• m/sec
• kg/sec
• kg
• kg m/sec