Experiment with forces

What is the force that causes objects to fall to Earth?

• Air resistance
• Gravity
• Water resistance
• Pressure

When two objects rub together, what force do they produce

• Gravity
• Air resistance
• Friction
• Water resistance

Which of these uses friction?

• A parachute
• A ball falling through the sky
• Brakes on a bike
• A wind turbine

A softball is tossed outside a window. Which force will act on the ball's motion as the ball flies and then hits the ground?

• gravity

• friction

• magnetism

Which surface would you expect the MOST friction?

• 
• 
• 
• 

What force most likely caused a problem with sliding into the pool?

• Gravity

• Push

• Pull

• Friction

using the same force on different objects with different masses, the object with less mass

• will accelerate quicker

• will accelerate slower

• will not move

• will accelerate at the same speed

You are pushing a wheelbarrow. What happens to the wheelbarrow's motion if more mass is added and you push with the same force?

• The motion will remain the same

• The motion will increase.

• The motion will decrease.

• The motion will change directions.

Your mom is shopping at Costco. As she adds more items into her cart, she will need to use less force to move the cart as its mass increases.

• True

• False

A horse was pulling an empty buggy, but then 5 people hopped on. What does the horse driver need to know about forces and motion to keep everyone safe while driving?

• The buggy has more mass now, so he will need more room to turn.

• The buggy has less mass now, so there is nothing to worry about.

• The buggy has more mass now, so he needs more time to brake.