Speed, Velocity, and Acceleration Checkpoint

Multiple Choice

Which of the following best describes what happens when a force acts on an object?

• The object always stops moving

• The object always moves in a circle

• One possible result is motion

• The object always receives forward momentum

Multiple Choice

Which of the following is generally used as a reference point to define motion?

• A moving car

• A stationary object like a tree

• A cloud in the sky

• A running person

Open Ended

Why do you think it is important to use a stationary object as a reference point?

Fill in the Blank

To determine the speed of an object, you need to know the ___ it moves and the amount of ___ needed to travel.

,

Multiple Choice

Which of the following statements about average speed is correct?

• Average speed is always equal to the highest speed reached.

• Average speed is calculated by dividing total distance by total time.

• Average speed is the speed at a specific instant.

• Average speed is always constant.

Multiple Choice

What is the main difference between speed and velocity?

• Speed includes direction, velocity does not.

• Velocity includes direction, speed does not.

• Speed is always greater than velocity.

• Velocity is always less than speed.

Multiple Select

Which of the following situations would result in a change in velocity? (Pick all that apply)

• A car speeds up while moving in the same direction.

• A car moves at constant speed but turns left.

• A car moves at constant speed in a straight line.

• A car slows down while moving in the same direction.

Multiple Choice

How does a force acting on an object relate to motion?

• A force always stops an object from moving.

• A force can cause an object to change its motion.

• A force has no effect on an object.

• A force only affects objects that are already moving.

Fill in the Blank

Acceleration is the rate at which an object's ___ changes.