Motion
Define distance
how far it is between two points
The formula for Speed (use words not letters)
Speed= Distance/Time
What is the sentence associated with Newton's First law?
An object in motion will stay in motion in the same direction unless acted on by an unbalanced force
What is a force
A push or pull that causes an object to move or change its speed, shape, or direction
If a car driving 60 mph and increases it's velocity to 100 mph in 2 seconds. What is the acceleration? Show your work.
20mph/s
Define Displacement
The distance between two points including a direction
Velocity formula
V= displacement/time
The formula F=ma is associated with what law?
Newton's 2nd Law of Motion
Force is measured in what unit?
Newtons
If a bird accelerates from 20 mph to 80 mph in 6 seconds what is the rate of acceleration?
10 mph/s
What are the two types of speed?
average and instantaneous
Force formula
F=ma
Newton's Third law says what?
For every action there is an equal and opposite reaction
What does it mean if the forces are balanced?
Equal in size and opposite in direction. The net force is 0.
If a car starts and +2 units from the origin and ends at +10 units from the origin what is the total displacement?
What is the origin?
the reference point used to judge displacement
displacement formula
final position-initial position
If you were wearing ice skates and pushed off of the rink wall what would happen? Draw it as a diagram
Drawing should have a figure putting force on the wall and the wall putting an equal and opposite form on the figure
What type of forces cause a change in motion?
Unbalanced forces
If a truck travels South to the gas station 12 miles away and it takes 8 minutes what is the average velocity?
1.5 miles per minute South
Why can we not feel Earth's motion?
Everything on Earth is moving at the same rate and there is no reference point close enough for our brains to sense the motion
Acceleration formula
What would the force needed be to push a 30kg cart 3m/s?
F=90N
What are the 4 types of friction?
Rolling, fluid, sliding, static
A car is traveling at a speed of 20 m/s for a period of 10 seconds. How far did the car travel?
200 meters