Accelerated Physics Week 6 revision quiz

What is the speed of the bowling ball?

• 20 m

• 5 sec

• 4 m/s

• 80 m/s

During which interval is the Cat at Rest?

• 0-5 sec

• 5-10 sec

• 10-15 sec

• 15-20 sec

A held baby is dropped from rest. If it falls for 2 seconds...

• it'll have fallen

  ~2 m

• it'll have fallen

  ~10 m

• it'll have fallen

  ~20 m

• it'll have fallen

  ~40 m

Compared to the speed the ball leaves the girl's hand, the ball's speed at the peak is...

• More

• Less

• The Same

Compared to the speed the ball leaves the girl's hand, the ball's speed on the way down at the height her hand is...

• More

• Less

• The Same

Compared to the speed the ball leaves the girl's hand, the ball's speed at her knee is...

• More

• Less

• The Same

answer

• A

• B

• C

• D

John walks 5 km east, and then turns around and walks 8 km west. What is John's displacement?

• 3 km; East
• 3 km; West
• 13 km; East
• 13 km; West

Suppose you INCREASE your walking speed from 1 m/s to 7 m/s in a time of 2 seconds. What is your acceleration?

• -3 m/s²
• 3 m/s²
• -4 m/s²
• 4 m/s²

Suppose a dog DECREASES its running speed from 8 m/s to 2 m/s in a time of 2 seconds. What is its acceleration?

• -3 m/s²
• 3 m/s²
• -5 m/s²
• 5 m/s²