Forces And Newton's Laws Question Preview (ID: 50187)
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Objects in motion / at rest, remain in motion/ at rest, unless acted upon by an unbalanced force is which of Newton's 3 Laws?
a) 1st Law
b) 2nd Law
c) 3rd Law
d)
Acceleration of an object increases with increased force and decreases with increased mass is which of Newton's Laws?
a) 1st Law
b) 2nd Law
c) 3rd Law
d)
For every action there is an equal and opposite reaction is which of Newton's Laws?
a) 1st Law
b) 2nd Law
c) 3rd Law
d)
What is inertia?
a) A measure of how quickly an object’s velocity is changing
b) A measure of how quickly something is moving
c) The tendency of objects to resist a change in motion
d) An object’s change in motion
What is acceleration?
a) A measure of how quickly an object’s velocity is changing
b) A measure of how quickly something is moving
c) A measure of how quickly something is moving in a certain direction
d) An object’s location
If an equal force acts on each of the following objects, which will have the greatest acceleration?
a) a golf ball
b) a soccer ball
c) a football
d) a football
Overcoming an object’s inertia always requires a(n):
a) large mass
b) massive force
c) unbalanced force
d) two of the above
Describe the motion of a person not wearing a seat belt if the car stops suddenly.
a) The person and car will stop together.
b) The person will stop faster than the car because they are lighter.
c) The car will stop and the person will keep moving forward because of inertia.
d) The car will stop and the person will speed up.
An action force and its reaction force are:
a) equal in size and direction
b) equal in size and opposite in direction
c) different in size but in the same direction
d) different in size and in direction
How can you tell if the forces acting on an object are balanced?
a) A. Motion changes
b) B. Motion does not change
c) C. The net force is zero.
d) D. Both B and C
How can you tell if the forces acting on an object are unbalanced
a) A. The motion changes
b) B. The motion does not change
c) C. The net force equals zero.
d) D. Both B and C
A force that is applied to an object by a person or another object is ____________________________.
a) friction
b) gravity
c) applied force
d) normal force
The force that pulls all objects toward the center of Earth is ________________________.
a) gravity
b) friction
c) normal force
d) applied force
At the grocery store you fill up your cart with lots of groceries. How do you expect the amount of force needed to push your cart will change?
a) You will have to use less force.
b) You will have to use more force.
c) You will not need to change the amount of force.
d)
An eagle soars through the air by pressing its wings downwards and the air in turn propels the bird upward. Which of Newton's Laws is this?
a) 1st Law
b) 2nd Law
c) 3rd Law
d)
A male giraffe has a large heavy head that is used to strike other males with tremendous force during confrontations. Which of Newton's Laws is this?
a) 1st Law
b) 2nd Law
c) 3rd Law
d)
A llama is running at a constant speed carrying packages on its back. When the llama makes an abrupt stop, the packages are sent into the air. Which of Newton's Laws is this?
a) 1st Law
b) 2nd Law
c) 3rd Law
d)
A baby rhino runs playfully at his mother and bumps into her. The baby falls backward from the impact. Which of Newton's Laws is this?
a) 1st Law
b) 2nd Law
c) 3rd Law
d)
A frog leaping upward off his lily pad is pulled downward by gravity and lands on another lily pad instead of continuing on in a straight line. Which of Newton's Laws is this?
a) 1st Law
b) 2nd Law
c) 3rd Law
d)
When Bobby, age 5, and his dad are skipping pebbles on the pond, the pebbles that Bobby's dad throws go farther and faster than his. Which of Newton's Laws is this?
a) 1st Law
b) 2nd Law
c) 3rd Law
d)
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