Force and Motion

Front

Why is friction force considered to be a contact force? Options: Friction affects only solid objects., Friction always acts in the same direction., Friction is produced when objects slide past one another., Friction acts in a direction opposite to the direction of an object’s motion.

Back

Friction acts in a direction opposite to the direction of an object’s motion.

Front

A bird flies at 12.5 meters/second. The wind speed is 4.5 m/s. What is the speed of the bird when it flies with the wind?

Back

17 m/s

Front

If no force is being applied to a stationary object, the object will...

Back

remain stationary.

Front

What was the average speed of the helicopter during the trip?

Back

2.5 km/min

Front

The graph shows the motion of four cars. All four cars are moving east.
Which car has a constant velocity?

Back

Car 3

Front

During which time period is Alesia moving fastest on her bicycle ride? Options: 0–1 hours, 3–4 hours, 4–5 hours, 6–7 hours

Back

0–1 hours

Front

A student walking quickly while carrying an orange on his lunch tray stops suddenly. The orange will most likely roll off the tray due to

Back

inertia of the orange.

Front

A push or a pull.

Back

force

Front

What can force do to an object?

Back

Accelerate an object, Slow down an object, Have the object remain in place, Have the object change shape, All of the above

Front

What is the measure of force?

Back

Newtons