HS Physics Final Exam (Fall Semester) Set A

Question 1 of 2: Jason and his sister, Tara, are riding bicycles. Jason tries to catch up to Tara, who has a 10.0-s head start. What is magnitude of each of their average accelerations?

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Question 2 of 2: Jason and his sister, Tara, are riding bicycles. Jason tries to catch up to Tara, who has a 10.0-s head start. What is magnitude of each of their total displacements?

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Question 1 of 3: A 200-g ball rolls down a hill with a constant acceleration of 2.0 m/s². The ball starts at rest and travels for 4.0 s before it hits a wall. How far did the ball travel before it hit the wall?

• 8.0 m

• 12 m

• 16 m

• 24 m

Question 2 of 3: A 200-g ball rolls down a hill with a constant acceleration of 2.0 m/s². The ball starts at rest and travels for 4.0 s before it hits a wall. What was the magnitude of the ball’s velocity just before it hit the wall?

• 2.0 m/s

• 8.0 m/s

• 12 m/s

• 16 m/s

Question 3 of 3: A 200-g ball rolls down a hill with a constant acceleration of 2.0 m/s². The ball starts at rest and travels for 4.0 s before it hits a wall. If the ball bounces back at the same speed after hitting the wall, what impulse did the wall deliver to the ball?

• 4.8 N-s

• 3.2 N-s

• 3200 N-s

• Zero

A flowerpot falls off the balcony of a penthouse suite 85 m above the street. How long does it take to hit the ground?

• 4.1 s

• 8.2 s

• 8.7 s

• 4.4 s

Question 1 of 3: The diagram shows the forces acting on a 50-kg skydiver. What is the name of force Y?

• Normal force

• Drag

• Gravity

• Thrust

Question 2 of 3: The diagram shows the forces acting on a 50-kg skydiver. What is the name of force X?

• Normal force

• Drag

• Gravity

• Thrust

Question 3 of 3: The diagram shows the forces acting on a 50-kg skydiver. What happens to the skydiver’s speed when force X is bigger than force Y?

• She will fall at constant speed.

• She will accelerate downward.

• She will slow down while falling.

• She will stop.

Question 1 of 3: The diagram shows the v-t graph of a car traveling on a rough road. The mass of the car is 1000 kg. What is the net force on the car?

• 380 N

• 400 N

• 2500 N

• 5000 N