Forces

Which of the following refers to the force that pulls objects toward each other?

• friction

• gravity

• mass

• weight

Tags

NGSS.MS-PS2-4

The unit used to express distance.

• kg

• m

• N

• N/kg

The force of attraction that exist between the moon and Earth is _____.

• friction

• gravity

• mass

• weight

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

The following can reduce friction except ______.

• grease

• oil

• sand

• water

Which of the following will be directly affected if you travel from Earth to the moon?

• air resistance

• friction

• mass

• weight

Tags

NGSS.MS-PS2-4

The unit used to express the mass of an object.

• kg

• m

• N

• N/kg

Which of the following is NOT true about friction?

• Friction always produce undesirable effects.

• Friction acts in the opposite direction of motion.

• Friction increases when one object is on top of the other.

• Greater work is done in pushing objects because of friction.

The unit used to expressed the weight of an object.

• kg

• m

• N

• N/kg

Tags

NGSS.MS-PS2-4

Which of the following situations show a positive effect of friction?

• slippery floor

• worn out tires

• pushing heavy furniture

• firm grip on tennis rackets

What is the weight of an object that has a mass of 20 kg?

• 2 N

• 20 N

• 200 N

• 2000 N

Tags

NGSS.MS-PS2-4