Question 1

Why do drivers drive their car slowly during rainy days?

Accepted Answer

Drivers drive slowly because the road is wet so there is less friction.

Answer

Drivers drive slowly because the road is wet so there is more friction.

Answer

Drivers drive slowly because they are afraid of the rain.

Answer

Drivers drive slowly because the windshield is blurred.

Question 2

Which is NOT a way of reducing friction?

Accepted Answer

putting spikes on tires

Answer

putting grease on bicycle gears

Answer

making the floor smooth

Answer

applying lubricant

Question 3

Why do you need to put rollers under the cabinets when you want to move them?

Accepted Answer

to minimize friction through the small surface of contact of the rollers.

Answer

to slow down the movement of the cabinet

Answer

to stop the movement of the cabinet

Answer

to apply more force

Question 4

Why do badminton players use rubber shoes while playing?

Accepted Answer

to have greater friction between their shoes and the floor.

Answer

to glide faster since the badminton court is slippery

Answer

to slide since the badminton court is slippery

Answer

to have lesser friction between their shoes and the floor.

Question 5

Which of the following situations shows that friction is increased?

Accepted Answer

Ana uses rubber shoes while jogging.

Answer

Ruben puts rollers on heavy cabinets.

Answer

Naldo puts grease on his bicycle gears.

Answer

Belle puts floor wax to make the floor smooth.

Question 6

How do you describe the friction between a surface and an object with greater surface area?

Accepted Answer

equal

Answer

smaller

Answer

greater

Answer

the same

Question 7

A crumpled and an uncrumpled paper were dropped at the same height and time, which paper will reach the ground first?

Accepted Answer

The crumpled paper because it has a smaller surface area.

Answer

Crumpled paper because it is heavier compared to the uncrumpled paper.

Answer

The uncrumpled paper because it has a bigger surface area.

Answer

None, because both the crumpled and uncrumpled paper have same masses.

Question 8

A boy is playing with a toy car. In which surface will it travel faster?

Accepted Answer

polished floor

Answer

cemented floor

Answer

carpeted floor

Answer

grassy surface

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