Motion and Speed
Change in position relative to some fixed object or place
Motion
Speed and direction
Velocity
A property of all moving objects
Momentum
Tendency for an object to stay at rest or in motion.
Inertia
Use the formula to find the amount force of that would need to be applied to an object with a mass of 10kg to make it accelerate at a rate of 45 m/s.
F = 10 kg x 45 m/s
F = 450 N or kg-m/s/s
Distance traveled per unit of time
Speed
What is an example of velocity
90 m/h west
The total momentum of any isolated system always remains the same.
Law of the conservation of momentum
According to Newton's 1st Law what is needed to an object at rest to move?
an unbalanced force
What are the 2 forces in Newton's 3rd Law
action and reaction forces
Total distance traveled divided by the time it takes to travel that distance
Average Speed
Rate of change in velocity over time
Acceleration
What happens to the momentum of a bowling ball when it hits the pins?
The momentum gets transferred to the pins. The bowling ball looses momentum and the pins gain momentum
Describe an action that demonstrates Newton's 1st Law
Cup and coin experiment
For every action force there is an ____________ and _________________ reaction force.
equal and opposite
The speed you are traveling at any given instant. The speed it shows on the car's speedometer.
Instantaneous speed
What is the formula for acceleration?
A = Change in velocity / Time
What is the formula for momentum?
Momentum = mass x velocity
In Newton's 2nd Law the movement of an object has to do with 3 things.
force, mass and acceleration
Action forces and reaction forces always act on ___________ (same or different) objects
different
What is the formula for speed?
S = Distance / Time
Find the acceleration of a car that takes 10s to reach a speed of 150m/s. (don't forget the units)
150 m/s divided by 10s = 15 m/s/s
Use the formula to figure out the momentum of a bowling ball that is 8kg moving at 20 m/s.
8 kg x 20 m/s = 160 kg-m/s
What is the formula for finding for force used to move an object?
force = mass x acceleration
List an action that demonstrates each of Newton's Laws
1 - a tablecloth being pulled out from the dishes demonstrates inertia
2 - a dad can carry a box that is too heavy for a child is explained in law 2 because the dad is able to use more force than a child
3 - a rocket blasting off is an example of an action and reaction force