Forces and Motion Test

What is a force?

• a push or pull
• just a push
• just a pull
• neither a push or pull

What is friction?

• when an object moves at a fast speed
• when two objects rub against one another
• when an object falls
• when gravity acts on an object

What happens when friction is present?

• an object speeds up
• an object falls
• an object slows down and eventually stops
• an object floats

What causes an object to be in motion?

• a force
• a newton 
• friction

What is an example of a balanced force?

• a car speeding up down the street
• a ball falling to the ground
• a tie during a game of tug-of-war
• a ball rolling on the sidewalk

What is the formula for finding speed?

• distance/time=speed
• distance x time = speed
• speed x distance = time
• time/distance=speed

If a girl is walking a distance of 21 feet, and it takes her 7 seconds, what is her speed?

• 
  6 feet per second
• 3 feet per second
• 8 feet per second
• 2 feet per second

Imagine our class is playing a game of tug-of-war. If one side exerts a force of 10 newtons, and the other side exerts a force of 4 newtons, what is the net force?

• 12 newtons
• 9 newtons
• 6 newtons
• 3 newtons

Imagine our class is playing a game of tug-of-war. If the left side exerts a force of 10 newtons, and the right side exerts a force of 4 newtons, which side will win?

• the right side
• the left side

Which one of the following is NOT a non-contact force?

• kicking a ball
• magnetism
• gravity
• electrical