Download 2.1.1

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Regents Physics
Worksheet 2.1.1 – Newton’s Laws / Mass and Weight (10 points)
Show all work – multiple choice answers MUST be proven for full credit!
1.
Captain Jones is a 60.0 kilogram astronaut.
a.
2.
Calculate his weight on Earth.
A 50 kilogram object is pulled with a net force of 100
newtons.
a.
Determine the acceleration of the object.
[2.0 m/s2]
[589 N]
b.
b.
Determine his weight on the Moon where the
acceleration due to gravity is 1.62 meters per
2
second .
What force would be needed to make the
object accelerate at a rate of 4.0 meter per
2
second ?
[200 N]
[97.2 N]
c.
Captain Jones weighs 530 newtons on Venus.
Determine the acceleration due to gravity on
Venus.
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3.
Sketch a graph that shows the relationship between an
object’s weight and its mass.
weight
mass
What does the slope of this graph represent?
[8.83 N/kg]
4.
Which of the following is subjected to a net, unbalanced
force?
(1)
(2)
(3)
(4)
a block hanging from a wire
a ball at rest on a table
a book sliding on a table at a constant velocity
a rock free-falling toward the ground
Proof: Explain your reasoning.
5.
An object with mass M is subjected to a force of 100
newtons and accelerates at rate A. How much force would
be needed to make mass M accelerate at rate 4A?
(1) 25 N
(2) 100 N
(3) 200 N
(4) 400 N
Proof: Explain your reasoning/show calculations.
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6.
A 30 kilogram mass is moved from Earth to Mars where the
2
acceleration due to gravity is 3.77 meters per second .
What is the object’s mass on Mars?
(1) 294 N
(2) 30 kg
(3) 113 N
(4) 7.96 kg
Proof: Explain your reasoning/show calculations.