Friction Flashcard

Front

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

Back

opposite

Front

Which type of friction occurs when objects are not moving? Options: static, sliding, fluid, rolling

Back

static

Front

How can friction be reduced?

Back

All of the above are ways of reducing friction.

Front

The amount of friction depends on the weight of the objects pressing together.

Back

True

Front

If an object is at rest on an inclined plane, which of the following forces is greatest? normal force, friction, weight, Both normal force and weight are equal, so they both are the greatest.

Back

weight

Front

A hockey puck slides on ice at a constant velocity. What is the net force acting on the puck?

Back

Zero

Front

What are the units on the coefficient of friction?

Back

none

Front

What is the force of friction between a 950-N block of ice and the horizontal ground if μ = .12?

Back

114 N

Front

What is the coefficient of static friction if it takes 44 N of force to move an 86-N box on a horizontal surface?

Back

0.51

Front

A box requires 40 N to start it moving on a horizontal surface when the coefficient of static friction is .54. What is the weight of the box?

Back

74 N