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CHAPTER 4 NEWTONS LAWS -- PHYSICS Flashcards | StudBud
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CHAPTER 4 NEWTONS LAWS -- PHYSICS
CHAPTER 4 NEWTONS LAWS -- PHYSICS
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physics review
Flashcards
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Questions
14
Answers
1
Consider this example. This is an example of ___
Field force
Newton's second law
Tension
Drag force
2
How much force is needed to accelerate a 200 kg cow at 10 m/s²?
2,000 N
20,000 N
20 N
200 N
3
A mover pushes 40 kg of boxes with an acceleration of 2 m/s²... how much force?
120 N
20 N
80 N
40 N
4
Beginning at 10 m/s a car moves at 3 m/s² for 5 seconds. Find the final velocity of the car.
15 m/s
25 m/s
18 m/s
30 m/s
5
Newton's Third law: For every action force there is __ force
always a contact and frictional
an equal and opposite reaction
another similar reaction
a gravitational field
6
This graph represents a moving bowling ball. What is the acceleration?
4 m/s²
40 m/s²
10 m/s²
2.5 m/s²
7
Considering Newton's second law, which best describes acceleration?
m * a
F/m
Equal and opposite
F * m
8
Equilibrium occurs when ___.
an object moves at a constant acceleration
the net force is zero
an object is not moving
an object changes direction
9
If there are no contact forces on an object and the apparent weight is 0, it is said to be...
in equilibrium
at terminal velocity
weightless
small
10
Which of the following sums up Newton's first law?
Equal and opposite
internal forces
F=ma
inertia
11
Bob stands on a scale going up in an elevator. His weight will appear _____.
twice as much
higher
the same
lower
12
What is this called?
Free Body Diagram
Force Map
Force Body Diagram
Free Gravity Map
13
What is the velocity at 4 seconds?
2.5 m/s
10 m/s
4 m/s
0.4 m/s
14
Net force is...
The sum of forces on one axis
The force exerted on a fish
The vector sum of all forces
The absolute value of all the forces
