Weight and apparent weight

What is the difference between mass and weight?

• mass is how much matter is in an object, and weight is the gravitational pull on that object

• mass and weight are the same

• weight affects how much mass is in an object

• weight is determined by how many atoms make up an object

Unit for mass

• kg
• newton
• m/s
• m/s²

Tags

NGSS.MS-PS2-2

The force that one surface exerts on another when the two surfaces rub against each other_

• Speed 
• Force
• Net force
• Friction

A man hits a 0.2 kg golf ball causing it to accelerate at rate of 20 m/s². Calculate the force used on the golf ball.

• 4 N
• 100 N
• 0.01 N
• 20.2 N

A force of 560 N is needed to produce an acceleration of 20 m/s². What is the mass of the accelerated body?

• 28 kg
• 11200 kg
• 0.04 kg
• 580 kg

Tags

NGSS.HS-PS2-1

Which force produces a change in motion?

• unbalanced force
• balanced force
• gravitational force
• frictional force

Tags

NGSS.MS-PS2-2

What is the standard unit force is measured in?

• Newtons
• pounds
• grams
• meters

Friction is a force that acts in an ___________ direction of movement.

• similar
• opposite
• parallel
• west

How would the absence of friction affect a marble traveling on a long, straight path?

• The marble’s speed would decrease.
• The marble’s speed would increase.
• The marble would stop immediately. 
• The marble would remain at constant speed.

Tags

NGSS.MS-PS3-1

Rougher surfaces have ...

• greater friction
• less friction
• the same level of friction