Frictional Forces

Front

Frictional force acts in the .................. direction of motion

Back

opposite

Front

The rougher the surface, the greater the frictional force of the object.

Back

True

Front

A force is a . . . . or a . . . .

Back

push or pull

Tags

NGSS.3-PS2-1

Front

The book will move further along a smooth surface than a rough surface.

Back

true

Tags

NGSS.MS-PS2-2

Front

If there were no frictional force, would a moving coin come to a stop on the table?

Back

False

Tags

NGSS.MS-PS2-2

Front

When we push or pull an object, we are applying a . . . . to it.

Back

force

Tags

NGSS.MS-PS2-2

Front

What is the problem of frictional force between the boat and the water?

Back

it slows down the boat

Front

To reduce the frictional force on the machine, we can use...

Back

lubricant, oil, grease

Tags

NGSS.MS-PS2-2

Front

When there is a greater force to an object, a greater frictional force is needed to move the object.

Back

false