Forces and Motion

The unit of force is....

• meter

• meter/ second

• Newton

• forcemeter

What forces are A and B that act on the boat?

• drag and thrust

• upthrust and drag

• lift and weight

• upthrust and weight

Tags

NGSS.MS-PS2-2

Force acts on an object may change....

• direction

• shape

• speed

• all of the above

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Friction can be increased by ___________

• applying lubricants

• using ball bearings

• making rough surface

• polish the surface

Which of the following is the advantage of frictional force?

• produce heat

• prevents from slipping while walking

• slide easily

• produce noise

What is the magnitude of GRAVITY of the earth?

• 8 N/Kg

• 9 N/Kg

• 10 N/Kg

• 11 N/Kg

The equation of weight is....

• Weight = gravity x force

• Weight = mass x gravity

• Gravity = weight x mass

• Mass = weight x gravity

Your mass will be changed if you travel to the moon.

• True

• False

Tags

NGSS.MS-PS2-4

Your weight will be changed if you travel to the moon.

• True

• False

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Look at the picture. Is it balanced force or unbalanced force?

• balanced force

• unbalanced force