DRED Ch. 9

What law states objects at rest tend to stay at rest?

• Inertia

• Momentum

• Energy of motion

• Gravity

This law is the tendency of an object to stay in motion.

• Inertia

• Momentum

• Energy of motion

• Gravity

The more a vehicle weighs the greater its __________

• Center of gravity

• Energy of motion

• Gravity

This is the force that pulls all things to Earth

• Inertia

• Momentum

• Energy of motion

• Gravity

The law of energy of motion states that if you double your speed you will need _____ _____ as much distance to stop.

• 2 times

• 3 times

• 4 times

• 10 times

What does the amount of momentum depend on?

• Weight

• Speed

• Both

What force keeps a tire from sliding on the road?

• Kinetic energy

• Inertia

• Friction

• Center of gravity

Friction between your tire and the road is called?

• Kinetic energy

• Inertia

• Traction

• Center of gravity

How does cold weather affect tire pressure

• Reduces

• Increases

• No change

(Select all that apply) What can you do to ensure your vehicle has good traction?

• Check air pressure regularly

• Replace old tires if tread is worn low

• Ensure shocks are in good condition

• Drive faster so car sticks to the road better