Transcript Forces Jeopardy

Force
Vocabulary
Problems
More Force
Problems
Force
Diagrams
Extra
Questions
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Question 1 - 10
• A push, pull or any other action that changes
motion
Answer 1 – 10
• What is…. a force
Question 1 - 20
• The resistance to change in motion
Answer 1 – 20
• What is inertia
Question 1 - 30
• A support force that is always 90° from the
surface.
Answer 1 – 30
• normal force
Question 1 - 40
• A force that resists motion
Answer 1 – 40
• frictional force
Question 1 - 50
• The acceleration due to gravity is rounded to
this number.
Answer 1 – 50
• 10 m/s/s
Question 2 - 10
• The equation for force is F=_______
Answer 2 – 10
• F= ma
• (Force = mass times acceleration)
Question 2 - 20
• What are the units for force?
Answer 2 – 20
• Newton (N)
Question 2 - 30
• What is the formula to solve for mass?
M=______
Answer 2 – 30
• m=F/a
• (mass equals force divided by acceleration)
Question 2 - 40
• What are the units for mass?
Answer 2 – 40
• Kilogram (kg)
Question 2 - 50
• What are the units for acceleration?
Answer 2 – 50
• meters per second per second (m/s/s)
Question 3 - 10
• What is the net force required to accelerate a
a 10 kg wagon by 2 m/s/s?
• Make sure to include units
Answer 3 – 10
• 20 N
Question 3 - 20
• What is the acceleration of a 1,200 kg car
when a force is 4,200 N is applied?
• Make sure to include units!
Answer 3 – 20
• 3.5 m/s/s
Question 3 - 30
• You push a box with a force of 30 N on a
frictionless horizontal surface and the box
accelerates at 2.5 m/s/s. What is its mass?
• Make sure to include units!
Answer 3 – 30
• 12 kg
Question 3 - 40
• Tyrus pushes a 50 kg box with a force of 25 N.
Assuming the surface on which the box moves
is frictionless, at what rate is the box
accelerating?
• Don’t forget units!
Answer 3 – 40
• 0.5 m/s/s
Question 3 - 50
• Suppose a ball had a mass of 5.0 kilograms.
Given the acceleration due to gravity is 10
m/s/s, what is the weight of the ball in
Newtons?
• Remember units
Answer 3 – 50
• 50 N
Question 4 - 10
• A box is accelerated to the left, horizontally
across the floor. Draw a force diagram of the
box.
Answer 4 – 10
Normal
Applied
Friction
Gravity
Question 4 - 20
• Draw a force diagram for a hockey puck sliding
across ice. Ignore frictional forces.
Answer 4 – 20
Normal
Gravity
Question 4 - 30
• A person is playing tug-of-war with a dog. The
person is pulling with 8 N of force and the dog
is pulling with 50 N of force. Assume those
are the only forces.
• Draw a force diagram.
• What is the net force?
Answer 4 – 30
50 N
Net force= 42 N to the left
8N
Question 4 - 40
• A can of soda sits motionless on a table.
Diagram the forces acting on the can.
Answer 4 – 40
Normal
Gravity
Question 4 - 50
• During tug-of-war, Orkyia thought she could
beat Elizabeth. Orkyia applied a force of 100
N to the left and Elizabeth applied a 150 N
force to the right.
• What is the net force?
• Is the force balanced or unbalanced?
Answer 4 – 50
• Net force= 50 N to the right
• Unbalanced
Question 5 - 10
• The SI unit of force is the _________
Answer 5 – 10
• Newton
Question 5 - 20
• Which object has more inertia—a cell phone
or tablet?
Answer 5 – 20
• tablet
Question 5 - 30
• Where does inertia come from?
Answer 5 – 30
• mass
Question 5 - 40
• Johnny pushes a rock with 7 N of force toward
the west. James pushes the rock with 8 N of
force towards east. The rock rolls ______ with
a force of ________ N.
Answer 5 – 40
• East, 1 N
Question 5 - 50
• Arlee used a marble launcher to accelerate a
30 gram marble at a rate of 20 m/s/s.
Calculate the size of the force needed to
launch the marble at a rate of 40 m/s/s.
• Hint: Convert 30 grams into kg (1 kg=1000g)
Answer 5 – 50
• 1.2 N