Unit 7 Review help

Fill in the blank: According to Newton's 1st law, the seat belt acts as the _______ force that stops you when the car suddenly stops.

• unbalanced

• balanced

• gravitational

• frictional

Newton's 1st law of motion states that an object at rest stays at rest and an object in motion stays in motion unless acted upon by what?

• A force

• Gravity

• Friction

• Momentum

What is the formula for force according to Newton's 2nd law?

Tags

NGSS.MS-PS2-2

Which type of force is exerted by a person or object on another object?

• Friction

• Gravity

• Normal/Support

• Applied

Which type of force acts on objects due to their mass?

• Friction

• Gravity

• Normal/Support

• Applied

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

What type of force is exerted by a surface to support the weight of an object resting on it?

• Friction

• Gravity

• Normal/Support

• Applied

Tags

NGSS.MS-PS2-1

How do you make an electromagnet stronger? Check all that apply

• add another battery

• add more coils (wraps)

• change the core

• change the wire

Tags

NGSS.MS-ETS1-4

NGSS.MS-PS2-5

What do the arrows in the vector diagram represent?

Tags

NGSS.MS-PS2-5

What does weight depend on?

• Gravitational pull

• Amount of matter

• Volume

• Temperature

Tags

NGSS.MS-PS2-4

What is the atomic number of Iron (Fe)?

• 26

• 24

• 28

• 30