Force Motion Study Guide
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1Force & Motion Study Guide
ANSWER KEY
What is the formula for speed?
S= D/T
What is the difference between
Velocity has a direction with the speed, speed is just
speed and velocity?
the ratio of distance to time.
Give an example of how air
Helpful: Parachutes;
resistance is helpful and one
example where it is not helpful.
Not Helpful: Gas mileage
What are 3 ways (with
1. Speed Up
examples) that an object can
Example: Positive acceleration like picking up speed
accelerate?
to get on highway.
2. Slow down
Example: Negative acceleration, braking in a car
3. Change direction
Example: Turning a corner in a car
What is an example of an
Answers will vary – anything demonstrating a
unbalanced force?
change in motion
What is an example of a balanced
Answers will vary – anything that is demonstrating
force?
no change in motion
Draw a graph that shows a car
moving at a fast constant rate,
then slowing down, stopping, and
going slow.
st
Use Newton’s 1
law to explain
The crash test dummy has inertia, and even though
why a crash test dummy keeps
the car stops the dummy is still in motion until
moving forward when a car
something else stops it: A windshield, seatbelt, etc;
crashes into a barrier.
What two things do you need to
Mass and Acceleration
know in order to find out the force
exerted on an object?
nd
Use Newton’s 2
law to explain
The more mass an object has, the harder it is to
which object one with a larger
accelerate that object, therefore, an object with a
mass or one with a smaller mass,
larger mass is going to have a smaller rate of
has a smaller rate of acceleration
acceleration.
rd
rd
What is Newton’s 3
law of
Newton’s 3
law says that for every action force,
motion?
there is an equal and opposite reaction force.
rd
Use Newton’s 3
law to explain
When a ball hits the earth, it pushes on it. The Earth
why a ball bounces off the floor.
pushes back on it, which is the reaction force and
causes the ball to bounce back up in the air.
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