Ch5 Dynamics

A _________ is defined as a PUSH or PULL on a system.

• Motion
• Force
• Friction
• Gravity

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What will happen if these boys are pulling with the same amount of force?

• The boy in blue will win.

• They will not move at all.

• The boy in red will win.

• Both will fall down.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

This type of force pushes or pulls on another object by touching it

• contact
• gravity
• friction
• fundamental

The unit of force is

• m/s
• m/s²
• newton
• kg

What is the force needed to accelerate a 30 kg object at 2 m/s²?  F = ma

• 15 N
• 30 N
• 60 N
• 2 N

Tags

NGSS.MS-PS2-2

Which of these is a Contact force?

• Gravity 
• Electric
• Shear
• Magnetic

If a force of 30 N is applied to a mass of 6 kg, what is the acceleration?  F = ma

• 5 m/s²
• 6 m/s²
• 30 m/s²
• 180 m/s²

Tags

NGSS.MS-PS2-2

Which of Newton's law states that if you push against a wall, the wall is actually pushing back against you?

• 1st Law
• 2nd Law
• 3rd Law
• None of these

Which is an example of torsion?

• pulling on a rope
• squeezing water from a towel
• sliding a box across the floor
• turning a door knob

What is the force needed to accelerate a 48 kg object at 0.5 m/s²?  F = ma

• 6 N
• 24 N
• 96 N
• 12 N

Tags

NGSS.MS-PS2-2