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STaR Physical Flashcards | StudBud
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STaR Physical
STaR Physical
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Answers
1
If an object is traveling at a constant speed, are all the forces interacting with the object balanced or unbalanced?
Unbalanced
Balanced
2
The cue ball has been hit in a straight line. What will happen to the white and yellow ball after impact?
The yellow ball will roll forward and the white ball will roll forward.
The yellow ball will roll backward and the white ball will roll backward.
The yellow ball will roll forward and the white ball will roll backward.
The yellow ball will roll backward and the white ball will roll forward.
3
In which direction will friction act in this scenario?
A
D
C
B
4
What is Newton's Third Law of Motion?
For every action there is an equal and opposite reaction.
Acceleration happens when force acts on an object with mass.
An object at rest stays at rest unless acted upon by an outside force.
An object in motion stays in motion unless acted upon by an outside force.
5
Which of Newton's Three Laws of Motion are being demonstrated in this amazing picture?
Newton's 3rd Law of Motion
Newton's 1st Law of Motion
Newton's 2nd Law of Motion
6
What type of force is needed to change an object's motion?
A balanced force
An unbalanced force
7
Sue kicks a soccer ball across the field during lunch recess. The ball eventually slows down and comes to a stop. Why?
The ball will only stop if it runs into something.
The interaction of friction on the ball will cause the ball to stop.
The more force Sue uses to kick the ball the further it will go.
The soccer ball will roll forever.
8
Which cart accelerates faster if both have the same mass: one pushed with 5 N force or one pushed with 1 N force?
The one pushed with 5N of force
The one pushed with 1N of force.
9
Why does Brooke find it easier to push a laptop cart after Jackie removes 30 laptops from it?
Since 30 of the laptops were removed, the mass of the cart increased.
Since 30 of the laptops were removed, the mass of the cart decreased.
Since 30 of the laptops were removed, the mass of the cart stayed the same.
10
Bob and Jack push on a bin from opposite sides. When referring to the picture below, who will the bin move towards?
Bob
Jack
11
What is the best description of what will happen to an object if all forces are balanced?
The object will remain in its current state.
The object will start moving.
12
Everything on Earth experiences the force of gravity. How then are we able to lift objects?
Gravity only affects large objects.
Objects cannot be lifted.
Lifting objects defies the laws of physics.
You must lift with a force that is greater than the force of gravity.
