Name that law!
F=MA
Force Diagrams
Action & Reaction Pairs
Vocab
100
An astronaut floats away in space forever
1st Law- Object in Motion...
100
What is the force of of a 10g ball traveling at 2 m/s?
20 N
100
Is the force balanced or unbalanced in this model?
balanced
100
Rowing a boat
paddles push water back, to move boat forward
100
Mass
Amount of matter in an object
200
Pushing a child on the swing is easier than pushing an adult.
2nd law- Mass is proportional to force
200
What is the force of a 500 kg moped traveling at 3 m/s
1500 N
200
Is this force balanced or unbalanced?
Unbalanced
200
Skateboarding
Foot pushes back, board moves forward
200
Force
Push or pull that changes object's motion
300
A student leans against the wall, waiting to enter the classroom.
3rd Law- Lean against wall, wall push against student.
300
What is the force of a 80kg bicyclist traveling at 3 m/s
240 N
300
What is the net force of this diagram? Include direction if necessary
50 N <- (Left)
300
Jumping on a trampoline
Push down on trampoline, trampoline pushes body up
300
Inertia
Tendency of an object to resist change in motion/rest
400
A swimmer jumps off a diving board, diving into the pool.
3rd law- Pushing down on board, causes jump up.
400
What is the acceleration of a 60kg person rollerskating at a force of 120 N
2 m/s
400
What is the net force of the following diagram? Include direction if necessary. 
40 N -> (right)
400
Hitting a punching bag
Hand hits bag, bag hits hand at same force
400
The SI unit for force?
newton N
500
A car and a truck press their gas pedal at the same time, but the car goes faster.
2nd Law- Acceleration is inversely proportional to mass
500
What is the mass of an object that has a force of 350 N and an acceleration of 7 m/s
50 g
500
Is the following forces balanced or unbalanced? What is it's net force/direction?
Unbalanced 17N -> (right)
500
Car tires on a road
Tires roll back against the road, to move car forward
500
The SI unit for acceleration
Meters per second, m/s