qUIZ 3 REVIEW PHYSICS LINEAR MOTION

Multiple Choice

What topics will be covered in the quiz on Friday?

• KEQ 1

• Freefall

• KEQ 2

• All of the above

Multiple Choice

What is the definition of velocity?

• The ongoing sequence of events taking place

• How far an object is from its starting point

• Average velocity is the displacement of an object over a change in time

• The change in velocity over time

Multiple Choice

What is the unit for velocity?

• m/sec
• kg/sec
• kg/m
• kg m/sec

Fill in the Blank

A ball is projected upward with an initial speed of approximately 40 m/s. The diagram at the right represents its position at 1-second intervals of time. At what location will the ball have a speed of 0 m/s? Write your answer as a capital letter.

Multiple Choice

Which time interval shows a constant velocity and no acceleration?

• 18 s to 24 s

• 4 s to 18 s

• 0 s to 24 s

• 0 s to 3 s

Multiple Choice

A hiker finds an abandoned well in the woods. He wants to know how deep it is. He very smartly drops a pebble and listens to hear it hit the bottom of the well. Using his smartphone, he times the pebble’s fall. Explain how he could use this information to determine how deep the well is.

• A. By measuring the echo delay and doubling it

• B. By using the formula for free fall

• By multiplying the time by the speed of light

• By dividing the time by the speed of sound

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident