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- 1. Multiple Choice
What is Newton's 3rd Law?
For every action there is an equal and opposite reaction.
Acceleration depends on two variables, the mass of the object and the amount of force.
- 2. Multiple Choice
A person steps out of the boat and onto the dock. As the person moves forward onto the dock, the boat moves backward. Which statement best describes the backward motion of the boat as the person steps forward?For every action there is an equal and opposite reaction.Every mass exerts a force on every other mass.An object at rest tends to stay at rest.Friction opposes the motion of an object. - 3. Multiple ChoiceAn empty truck and a fully loaded truck are next to each other at a traffic light. When the light turns green, the lighter truck increases speed more quickly. Which of these best explains this situationsNewton's first lawNewton's second lawNewton's third lawConservation of momentum
- 4. Multiple ChoiceA force of 90N is applied to each cart below, which one will accelerate the fastest?Cart 1Cart 2Cart 3Cart 4
- 5. Multiple ChoiceIf a 10 kilogram object had a force of 50 newton's applied to it, what would its acceleration be?15 m/s^25 m/s^2.5 m/s^210 m/s^2
- 6. Multiple Choice
The momentum of an object depends upon the object's ___________&_____________.
size and shape
mass and speed
mass and veloctiy
mass and energy
- 7. Multiple Choice
What is the unit for momentum?
m/s
kg
N
kg* m/s
J
- 8. Multiple Choice
What object will have more momentum a 1000 kg truck moving 7 m/s or a 500 kg car moving 10 m/s
Truck
Car
- 9. Multiple Choice
What force slows objects down and keeps them from moving?
Acceleration
Gravity
Friction
Net Force
- 10. Multiple Choice
An object in motion will stay in motion and an object at rest will stay at rest unless acted upon by an outside force. Which law does this describe
2nd law
1st law
3rd law
- 11. Multiple ChoiceWhich has more momentum: a car stopped at a red light or a bike moving at 15 mph?carbikethey are equalcannot determine using the info provided
- 12. Multiple ChoiceA 50 kg ball rolls down the street at 5 m/s. Calculate the momentum of the ball.55 kg*m/s100 kg*m/s250 kg*m/s500 kg*m/s
- 13. Multiple Choice
This game of tug of war is an example of _________ forces.
unbalanced
balanced
potential
net zero
- 14. Multiple Choice
What effect does friction have on a moving object?
it causes the moving object to slow and eventually stop
it causes the moving object to speed up
it keeps the moving object moving in the same direction forever
it causes the moving object to turn around and move in the opposite direction
- 15. Multiple Choice
Person on the left = 45 N
Person on the right = 32 N
What is the net force?
zero N
10 N
77 N
13 N
- 16. Multiple Choice
acceleration of an abject depends on its ___ as well as the force exerted on it.
mass
momentum
direction
- 17. Multiple Choice
__ is a force that opposes the motion of objects that move through the air.
rolling friction
static friction
air resistance
gravity
- 18. Fill in the Blank
Acceleration toward the center of a curved path is called ____ acceleration.
- 19. Fill in the Blank
The amount of __ between two surfaces depends on the kinds of surfaces and the force pressing the surfaces together.
- 20. Multiple Choice
Gravity is always
attractive
repulsive
both attractive and repulsive
neither attractive nor repulsive
- Answer choicesTagsAnswer choicesTags