Chapter 11 lesson 2

What is Newton's First Law known as? The Law of

• Friction
• Mass
• Inertia
• Gravity

Which has more Inertia? (so need more force to move) 

• Truck
• Ant
• A cat
• A skateboard

What two factors do you use to describe a force?

• speed and mass
• motion and direction
• strength and direction
• distance and time

Which type of force(s) will cause a change in an object's motion?

• gravity
• zero net force
• balanced forces
• unbalanced forces

What is the name for a push or pull?

• A movement
• A force
• Speed
• Density

What is Newton's First Law

• F=ma
• Every action has an equal and opposite reaction
• An object at rest stays at rest, an object in motion stays in motion. 
• Friction 

After a cannonball is fired into frictionless space, the amount of force needed to keep it going equals

• twice the force with which it was fired
• the same amount of force with which it was fired
• 1/2 the force with which it was fired
• zero, since no force is requires to keep it moving. 

What is the most commonly used unit for force?

• Seconds
• Kg
• lbs
• Newtons

What is a force?

• A unit of measurement
• A push or pull
• Another name for the Pythagorean theorem

When force increases acceleration...

• increases
• decreases