SQT Reviewer_Physics

what are the factors affecting the strength of friction?

• force and mass

• gravity and motion

• how two surface pushed to each other and the type of surface involved

If two objects with different mass were thrown at the same height will it fall on the ground at the same time, if there is no air involved?

• YES, due to no air resistance

• NO, due to air resistance

• both are correct

If two objects with different mass were thrown at the same height will it fall on the ground at the same time, if there is air involved?

• YES, due to no air resistance

• NO, due to air resistance

• both are correct

Which of the following involves frictional force.

(choose more than one.)

• Glass slide across the table

• A skydiver lands on water

• The debris falls from the building

• A bottle of soda at the top of the table.

• The rolling ball suddenly stops at the end of the slope

Which of the following involves gravitational force.

(choose more than one.)

• High and Low tides caused by Moon on Earth

• 
• Holding a cup of coffee

• A skydiver falls on water.

Where would a 35 Kg object be the heaviest? If we are referring to it's mass.

• Moon

• Earth

• Jupiter

• All of the above, since mass will remain the same.

Where would a 35 Kg object be the heaviest? If we are referring to it's weight.

• Moon

• Earth

• Jupiter

• None of the above

Which of the following has least friction? (choose more than one)

• glossy paper

• wet floor tiles

• grassy field

• sandy dunes

Which of the following has great friction? (choose more than one)

• silky dress

• grassy soccer field

• sandy paper

• polished floor

Complete the sentence.

All objects are attracted to each other due to __________________

• friction

• attraction

• gravitational pull