Topic Outline for Test

tutorials: Velocity, Acceleration, Go here for a variety of problems to download and tutorials to try http://www.physics.uoguelph.ca/~phyjlh/Prob/Problems.html

OUR CLASS TOPICS:Energy and Dynamics Outline:



Metrics: Be able to convert from metric units to other metric units

Examples:

Metric Ruler:
Kilo Hecto Deka 1 deci centi milli

101 km = _________ m .020 g = _______ mg

Scientific Notation:
Gain familiarity going from whole numbers and converting to scientific notation, and reverse.

1.3 x 10-34 = _________________________________________________

2,000,000,000,000,000,000,000 = ________________________________

Velocity: Given any two of three variables, solve for the 3rd. For example:

V = d/t t = d/v d=vt

Jenny runs across the soccer field (40 meters) to score the goal in 30 seconds. She faced and confused 4 defenders with her fast footwork. What was her velocity toward the goal?

V=
D=
T=

I bike for 2 hours My average speed was 9 km/hr. How far did I go?

V=
D=
T=

Acceleration: (change in velocity over time)

I measured my friend with a Doppler radar. He was riding his bike 15 mph and then went down a steep hill. He got to the bottom of the hill in 0.15 hours. By then he was going 30 mph on his bike! What was his acceleration.

Final velocity=
Initial velocity=
Time=
A=

Momentum
A woman walked away from Fred Meyers down interstate avenue with her cart. She had crossed Lombard avenue and hit the button for the crosswalk. She forgot about her cart for a moment and it went racing down the hill. It wrecked into a car and broke a window, crushed the side. This was a huge problem. She left a note on the car and later was sent a form from the owner’s insurance. It asked the speed of the car.

She talked to the owner of the car. He said the mechanic told him the car must have been hit with a momentum of at least 500 kgm/s. Fred Meyers carts are 20 kg. She had bought 30 kg of groceries. How fast was the cart going?

P=
M=
V=

Newton’s Laws:

1. Inertia.. an object at rest remains at rest unless disturbed by an outside force, an object in motion remains at rest unless disturbed by an outside force
2. F = ma
3. For every action there is an equal or opposite reaction

Newton’s Laws problems.
How much force do you exert on our floor?

M= Your mass: ___________ (x 1 kg/2.02lbs) = ___________________ kg


A= -9.8 meters/seconds squared


F=