When a car stops suddenly, your body tends to keep moving ________.

• forward

• to the right

• to the left

• backward

In space, a spacecraft with its engines turned off will move with constant speed in the same _____.

• direction

• inertia

• volume

• mass

A book will not move by itself because it has _____.

• mass

• direction

• inertia

• volume

Imagine a ball rolling down a hill without friction. To measure the moment of inertia, which of the following is NOT a measurement you would need to take (or figure out)?

• The mass of the ball.

• The radius/diameter of the ball.

• The angular acceleration of the ball.

A number that represents how much mass a rotating object has and how it is distributed. An object with more rotational inertia is easier to accelerate.

• TRUE

• FALSE

More massive objects have more inertia

• TRUE

• FALSE

Which best describes inertia?

• The resistance of motion

• The tendency of objects to remain as they are

• The resistance of being stationary

• The tendency of objects to start moving from a force

As mass increase, inertia .....

You push on a car and it does not move. What is true about the inertia?

• The inertia is changing

• There is not inertia because of no movement

• The inertia of the car is too great

The law of inertia (Newton’s First Law) applies

• only to objects that are not moving

• only to moving objects

• none