Vocabulary
Critical Thinking
Multiple Choice
Equations
Newton's Laws
100
A change in speed or velocity or both
Acceleration
100
Can a car be driven at a constant speed and have a changing velocity? Explain.
Yes, if it is changing its direction.
100
A marble rolls steadily at a speed of 1m/sec in one direction for 2 minutes. What property of the marble changes? A. acceleration B. speed C. position D. velocity
C. Position
100
F = ? x a
m, mass
100
Which law explains why we need to wear a seat belt while we are riding on a car?
Newton's first law
200
Distance divided by time
Speed
200
A truck is parking on the side of the road. A cyclist is riding a bicycle on the road. Which vehicle has a higher momentum?
The bicycle because it is moving at a higher speed.
200
If the same force acts on each of the following objects, which will have the greatest acceleration? A. a baseball B. a football C. a golf ball D. a soccer ball
C. a golf ball
200
a = ?/ m
f, force
200
A car will stop suddenly if the driver slams on the brakes. But if the driver applies the brakes gently, the car gradually slows down. Which law explains this?
Newton's second law
300
Force that goes against motion
Friction
300
Why do we need to install a bigger engine in a truck than in a car?
An object with bigger mass needs more force to accelerate.
300
If you were a bicycle racer, what feature would you look for in a bike? A. Large tires B. tires with high friction C. low mass D. high mass
C. low mass
300
Momentum = ? x velocity
mass
300
If you throw a ball, it eventually curves and hits the ground. Which law explains this?
Newton's first law
400
The use of a force to move an object through a distance
Work
400
As you walk, your feet push against the ground. Which Newton's law explains this?
Newton's third law of motion
400
Which of the following DOES NOT cause a car to accelerate? A. steering wheel B. car doors C. gas pedal D. brakes
B. car doors
400
Speed = Distance / ?
time
400
If a horse is pulling a cart, can you name the opposing force?
The horse pulls on the cart.
500
The property of matter that keeps an object at rest or moving in a straight line
inertia
500
Corey has tied an object to a string and is whirling it around in circles over his head. Use one of Newton's laws to predict what will happen to the object if Corey lets go.
The object will go in a straight line unless a force changes its motion. It will eventually hit the ground because of gravity. The First Newton's law of motion, which is the law of inertia, explain this.
500
Chris jumps up and puts a basketball in the basket. What object pushes against Chris so he can jump? A. the ball B. the floor C. the basket D. the scorebaord
B. the floor
500
Work = ? x ?
distance x force
500
After the shuttle reaches orbit, its engine shut down. But it is still orbiting around the Earth without hitting the Earth. What forces are acting upon it?
Inertia carries the shuttle forward. Gravity causes the shuttle to fall. The shuttle falls continuously toward Earth. But at the same time, it moves forward fast enough to keep from hitting Earth. The curve of the shuttle's path as it moves is the same as the curve of Earth, so the shuttle doesn't get any closer to Earth's surface.
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