Review for 9/17/21 Quiz

How long did one of the runner's rest?

• 8 seconds
• 13 seconds
• 5 seconds
• 50 seconds

Velocity is

• speed and acceleration
• constant speed
• a frame of reference
• speed in a given direction

Acceleration is

• increasing speed
• decreasing speed
• changing direction
• all of the above

What does this graph represent?

• Constant speed
• Acceleration
• Not moving

What does this graph represent?

• Constant Speed
• Acceleration
• Not moving

What does this graph represent?

• Constant speed
• Acceleration
• Not moving

What is happening between 2 and 3 seconds?

• The object is not moving.

• The object is not accelerating.

• The object is slowing down.

• The object is speeding up.

What is happening between 3 seconds and 4 seconds?

• The object is moving in a negative direction.

• The object is returning to its starting position.

• The object is slowing to a stop.

• The object is changing direction.

What is happening at E?

• Stationary
• Accelerating
• Fast steady speed; moving away from the starting position
• Steady speed; returning to start position

Which runner had a head start?

• A
• B
• C