3.1 forces and motion

Which of the following is a push?

• size

• force

• surface

• rough

• smooth

Answer explanation

A push is a force towards an object

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which of the following is a pull?

• size

• force

• surface

• rough

• smooth

Answer explanation

A pull is a force away from an object.

Which of the following is in the picture?

• size

• force

• surface

• rough

• smooth

Answer explanation

having an uneven or irregular surface; not smooth or level.

Tags

NGSS.MS-ESS2-2

This ball is _____?

• size

• force

• surface

• rough

• smooth

Answer explanation

having a smooth or regular surface; a level and even surface.

These are two ______.

• size

• force

• surfaces

• rough

• smooth

Answer explanation

the outside part or uppermost layer of something, can b smooth or rough.

Tags

NGSS.2-PS1-1

NGSS.2-PS1-2

What is the net force on the book?

• 2 N to the left

• 2 N to the right

• 20 N to the right

• 18 N to the left

Answer explanation

In the problem here the net force is 5N to the left.

Tags

NGSS.HS-PS2-1

Does friction slow things down or speed them up?

• slow things down

• speed things up

Tags

NGSS.MS-PS2-2

Are unbalanced forces equal or unequal?

• equal

• unequal

Tags

NGSS.HS-PS2-1

In the bottom picture what is the net force?

• 200N to the left

• 200N to the right

• They are equal so 0

• 400N

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

In the top picture what is the net force?

• 200N to the left

• 200N to the right

• They are equal so 0

• 400N

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2