Force and Motion

What is the net force on the car?

• 400 N forward (left)

• 0 N (balanced forces)

• 200 N forward (left)

• 200 N backward (right)

If a lizard can run 8 m across the water in 4 seconds, how fast is he traveling?

• 32 m/s

• 2 m/s

• 2 seconds

• 34 meters

What is the acceleration of an object that takes 20 seconds to change from a speed of 200 meters/second to 300 meters/second?

• 5 m/s squared

• 5 m/s

• 100 m/s

• 100 m/s squared

What will the net force on the soccer ball be?

• 50 N to the left

• 50 N to the right

• 200 N to the left

• 200 N to the right

7. A car traveling at 90 kilometers/hour when it suddenly stops. The passengers in the car will

• continue to move in a straight line and will slide forward in the car.

• come to a stop at the same time the car stops

• be pushed against the door on the passenger side

• be pushed against the door on the driver's side

Which scientist gave us the laws of motion?

• George Washington

• John Adams

• Sir Isaac Newton

2. ______________________ is any push or pull on an object.

• force

• mass

• gravity

• air resistance

Person on the left = 45 N

Person on the right = 32 N

What is the net force?

• zero N

• 10 N

• 77 N

• 13 N

What was Juan's average speed?

• 0.3 mi/min

• 3.25 mi/min

• 4 mi/hr

• 4 hours

What effect does friction have on a moving object?

• it causes the moving object to slow and eventually stop

• it causes the moving object to speed up

• it keeps the moving object moving in the same direction forever

• it causes the moving object to turn around and move in the opposite direction