8.MS-PS2-2 Question Preview (ID: 59646)
8.MS-PS2-2.
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Which of the following is NOT an example of a change in motion?
a) changing nether speed nor direction
b) changing speed, but not direction
c) changing direction, but not speed
d) changing speed and direction
The newton (N) is a measurement of force. Who is it named after?
a) Sir Charles Newton
b) Sir Francis Newton
c) Sir Isaac Newton
d) Sir Darwin Newton
Which of the following is the best explanation of net force equaling zero?
a) the object isn't moving
b) there aren't any forces acting on the object
c) the forces acting on the object are unbalanced
d) all forces acting on the object are balanced
What kind of force is gravity?
a) a pull
b) a push
c) trick question: it isn't a force
d) a balanced force
In order for you to sit still on a chair, what must be happening?
a) most of the forces acting on the chair are balanced
b) all of the forces acting on the chair are balanced
c) at least one force acting on the chair is balanced
d) the forces acting on the chair are unbalanced in some way
If two people pull a rock in the same direction, how would you calculate the net force applied to the rock?
a) find the difference between the two forces
b) add the two forces together
c) add the two forces together, and then also add in the force of friction
d) add the two forces together, and subtract the force of friction
If one person pushes a box to the left with a force of 5N and someone else pushes it to the right with a force of 10N, what is the net force?
a) 5N to the right
b) 5N to the left
c) 15N to the right
d) 15N to the left
What is the best explanation for what happens when the net force acting on an object is 0 newtons?
a) the object doesn't move
b) the object doesn't change in motion
c) the object speeds up or slows down
d) the object doesn't change its direction
Which of the following is an example of an object not changing its motion?
a) a ball starting to move after being kicked
b) a car slowing down as it approaches a stop sign
c) a robot moving in a straight line at a constant speed
d) a ball rolling down a hill faster and faster
Unless an unbalanced force is applied, what will an object do naturally?
a) slow down until it stops
b) begin to change in direction
c) speed up until it reaches its maximum speed
d) maintain its current speed and direction
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