Final Review Quiz

A skateboarder is riding their skateboard and hits the curb. Their skateboard stops, but their body flies forward. Which of Newton’s 3 laws of motion does this exemplify?

• Newton’s 1st Law of Inertia

• Newton’s 2nd Law of Acceleration, F=mxa

• Newton’s 3rd Law of Action/Reaction

Newton’s 2nd law states that the direction of acceleration is due to the net force. If a 10 kg shotput is thrown at 4 m/s, then what was its net force?

• 0.4 Newtons

• 40 Newtons

• 400 Newtons

In which of these free body-diagrams is the net force 15 N up?

• Diagram A

• Diagram B

• Diagram C

• Diagram D

What is the correct net force of the following free body diagram?

• 85 Newtons Right

• 40 Newtons Up

• 20 Newtons Down

• 75 Newtons Left

Which of the following free body diagrams could be moving at a constant velocity horizontally?

• Diagram a

• Diagram b

• Diagram c

• Diagram d

What is the force weight of a man on the moon if he is 100kg and the acceleration of gravity is 1.62 m/s²?

A 200 kg box is being pushed with 50 Newtons of force to the right. How much was it accelerating?

• 10,000 m/s²

• 4 m/s²

• 0.25 m/s²

Which of the following is not a contact force:

• Normal force

• Gravitational force

• Tension force

• Friction force

Two dogs were running. Dog 1 is 10 kg and ran at 10m/s. Dog 2 is 25 kg and ran at 5m/s. Which one has more momentum?

• Dog 1

• Dog 2

• They have equal momentum

When a model rocket is being launched, what aspects of physics is not necessarily being analyzed, unlike the others?

• Projectile motion

• Impulse force, change in momentum

• Drag force, thrust force

• Centripetal force