SC Physics Forces Quiz

You are able to push a mouse across a table and cause it to accelerate, but when you try to push an elephant, it doesn’t move. Newton’s ______ Law

• Second

• First

• Third

A swimmer in the water pushes off the wall and glides off in the opposite direction from the wall. Newton’s ______ Law

• Third

• First

• Second

A crash dummy is placed in a car that drives 100 mph into a wall. When the car hits the wall, the crash dummy continues to move forward. Newton’s ______ Law

• First

• Second

• Third

A vector is a quantity that requires both a magnitude and a

• Amount

• Unit

• Direction

• Measurement

When you step off a curb, the Earth pulls you downward. The reaction to this force is

• A slight air resistance

• Non-existent in this case

• You pulling the Earth upward

• None of the above

A cart is pulled to the right with a force of 15 N while being pulled to the left with a force of 20 N. The net force on the cart is

• 25 N to the left

• 25 N to the right

• 5 N to the left

• 5 N to the right

A 6 N textbook is placed on a table. What is the magnitude and direction of the support force supplied by the table?

• 6 N up

• 6 N down

• None (it is balanced)

• 1 N up

Which of the following is an example of static equilibrium?

• A textbook dropped by the teacher to demonstrate gravity

• A car accelerating away from a stop sign

• A textbook at rest on a table

• A person running at 20 m/s

Which of the following is an example of dynamic equilibrium?

• A car slowing down to a red light

• A car with cruise control set to 60 mph

• A textbook at rest on the table

• A textbook sliding across the floor, slowing down to a stop due to friction

A 120 pound physics student stands with both feet on a bathroom scale and the scale reads 120 pounds. The student then gets another scale and puts one foot on each. What does each scale read now?

• Each scale reads 120 pounds

• One scale reads 100 pounds and the other reads 20 pounds

• One scale reads 80 pounds and the other reads 60 pounds

• Each scale reads 60 pounds