Force and Motion

A contact force that happens when two objects are rubbing against each other is called what?

• force

• friction

• motion

• resistance

If the forces on an object are balanced, the net force is what?

• positive

• negative

• combined

• zero

Your car traveled 200 miles in 2 hours. Your average speed was what?

• 100 miles/per

• 200 miles/hour

• 300 miles/hour

• 400 miles/hour

If you wanted to throw a 3 kg basketball and 1 kg basketball exactly 10 meters, it would take how much force to throw the 3 kg basketball than 1 kg.

• less

• more

• equal

• unknown

Fore every action, there is an equal and opposite reaction is which law?

• 1st Law of Motion

• 2nd Law of Motion

• 3rd Law of Motion

• Law of Inertia

What is the formula to calculate velocity (average speed)?

• Time x distance

• Distance - time

• Time + distance

• Distance / time

An airplane is traveling at the speed of 500 meters per second. Five seconds later it approaches its destination and is moving at a rate of 450 meters per second. What was the rate of acceleration for the plane?

• -10 meters/second²

• -25 meters/second²

• -75 meters/second²

• -100 meters/second²

Force is measured in units called?

• Grams

• Newtons

• Seconds

• Meters

Homer and Holly are playing tug-of-war, Homer pulls a force of 20 N to the right. Holly pulls with a force of 14 N to the left. Name who won the tug-of-war and by how much.

• Holly, 6 N

• Homer, 20 N

• Homer, 6 N

• Holly, 14 N

A teacher drives between 4 different locations during the day. The table shows the distances between the locations and the time it took the teacher to drive to each part of the trip. During which part of the trip was the teacher's average speed the greatest?

• home to school

• school to store

• store to post office

• post office to home