#### Newton`s Laws Test Review

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Transcript Newton`s Laws Test Review

NEWTON’S LAWS TEST
REVIEW
Which of Newton’s Laws states for every action
there is an equal and opposite reaction?
3
Which of Newton’s laws states that an object in
motion will remain in motion unless acted upon by
unbalanced forces?
1
The amount of gravitational force between 2
objects depends on which two factors?
Mass
of objects
Distance between objects
1 Pound = ? Newtons
4.448
N
What is the weight of a 250 kg person?
250x9.8
= 2450 N
What unbalanced force is needed to give a 1000
Kg truck an acceleration of 3 m/s2?
3000
N
A .50 Kg metal ball experiences a net force of 2
Newtons as it rolls down a ramp. What is the
acceleration of the ball?
4
What is the units for acceleration?
m/s2
Any object that is thrown or shot through the air is
called a
Projectile
How do you find an object’s momentum?
Mass
x velocity
What is the momentum of a 100 kg man running at
a speed of 5 m/s (include correct units)?
500
kg x m/s
What is the velocity of a 100 kg man with a
momentum of 400 kg x m/s (include correct units)?
4
m/s
How does the total momentum of 2 objects before a
collision compare to the total momentum after a
collision?
Same
due to Law of Conservation of Momentum
An object that has balanced forces acting upon it
would have a Net FORCE equal to
zero
When air resistance balances the weight of a
falling object, the object reaches its top speed
called
Terminal
velocity
The resistance of an object to changing its motion is
called
inertia
The amount of matter in an object is called its
Mass
A vector quantity includes both
Magnitude
and Direction
The value of acceleration for objects in free fall
near earth is __________ (include correct units)
9.8
m/s2
In the Newton Car lab the rubber bands applied an
action force to the small block of wood, what was
the reaction force?
Block
of wood on Newton car
If forces occur in pairs and are equal and opposite
why do they not cancel each other out?
They
are acting on different objects
What is the net force on the box below?
-40
N
-25
N
15 N