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NEWTONS LAWS -- PHYSICS Flashcards | StudBud
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NEWTONS LAWS -- PHYSICS
NEWTONS LAWS -- PHYSICS
13 terms
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StudBud Administration
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physics review
Flashcards
13 cards
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Practice quiz
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Questions
13
Answers
1
Equilibrium occurs when ___.
an object changes direction
an object is not moving
the net force is zero
an object moves at a constant acceleration
2
Net force is...
The sum of forces
The absolute value of all the forces
The vector sum of all forces
3
What is this called?
Free Gravity Map
Free Body Diagram
Force Body Diagram
Force Map
4
This graph represents a moving bowling ball. What is the acceleration?
4 m/s²
2.5 m/s²
40 m/s²
10 m/s²
5
Newton's Third law: For every action force there is __ force
an equal and opposite reaction
another similar reaction
always a contact and frictional
a gravitational field
6
Bob stands on a scale going up in an elevator. His weight will appear _____.
twice as much
the same
lower
higher
7
Which of the following sums up Newton's first law?
Equal and opposite
internal forces
inertia
F=ma
8
Considering Newton's second law, which best describes acceleration?
F * m
F/m
m * a
Equal and opposite
9
A mover pushes 40 kg of boxes with an acceleration of 2 m/s²... how much force?
40 N
120 N
20 N
80 N
10
How much force is needed to accelerate a 200 kg cow at 10 m/s²?
2,000 N
200 N
20 N
20,000 N
11
What is the velocity at 4 seconds?
4 m/s
0.4 m/s
10 m/s
2.5 m/s
12
If the sum of the sum of the forces on an object is zero, the object is in..
at terminal velocity
small
in equilibrium
weightless
13
Starting @ 10 m/s a car accelerates at 3 m/s² for 5 seconds. Find the final velocity of the car
30 m/s
15 m/s
18 m/s
25 m/s
