Friction

Question 1

Reyna kicks a ball, which then rolls across a grassy field. Which is the best explanation for why the ball eventually comes to a stop?

Revolt · Accepted Answer

The force of friction between the ball and the grass slows the ball to a stop.

Question 2

Question 2

Revolt · Accepted Answer

rolling

Question 3

Question 3

Revolt · Accepted Answer

air resistance

Question 4

Question 4

Revolt · Accepted Answer

static

Question 5

Which factors affect friction between two solid surfaces? Select two options.

Revolt · Accepted Answer

the weight of the objects; the roughness of the objects’ surfaces

Question 6

Which of these actions will increase friction? Select three options.

Revolt · Accepted Answer

scratching a surface to make it rougher; increasing the size of a flying object; adding extra weight to an object

Question 7

Ivan pushes a dresser with full drawers across his carpeted floor. What could Ivan do to reduce the amount of friction between the dresser and the floor? Select two options.

Revolt · Accepted Answer

place some smooth tiles under the dresser; remove the drawers from the dresser

Question 8

The box is at rest on the table. Which force is represented by vector A?

Revolt · Accepted Answer

static friction

Question 9

The net force acting on the box is 18 N. What is the force of friction?

Revolt · Accepted Answer

–4 N

Question 10

Identify the type of friction acting in each scenario. A surfer rides an ocean wave. A bowling ball travels down a bowling lane. A baseball flies through the air. A hose rests on the edge of a truck.

Revolt · Accepted Answer

fluid; Selection 1: fluid; Selection 2: rolling; Selection 3: air resistance; Selection 4: static

Friction Answers

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