Distance/Displacement
Velocity
Acceleration
Freefall
100
State the variable and unit for displacement
Variable: (x)
Unit: (m)
100
State the variable and unit for velocity
Variable: v
Units: m/s
100
State the variable and unit for acceleration
Variable: (a)
Units: ( m/s2 )
100
Explain the Law of Free Bodies:
For double points, at what conditions does it have to be for this law to apply
All objects fall at the same acceleration.
This can only be done if there is NO AIR RESISTANCE
100
Explain how we measure the position of the buggy in our buggy lab.
We placed pennies down next to the car, during each second.
100
For Velocity, What is changing over time?
Position (or distance)
100
For Acceleration, What is changing over time?
Velocity
100
At what rate do all objects fall (ignoring air resistance!)
10 m/s2
100
Explain the difference between distance and displacement
Distance - Length of TOTAL path traveled.
Displacement- Difference from the STARTING and ENDING POSITION
100
What is the velocity of a rocket that travels 9000 meters in 12.12 seconds?
v= 742 m/s
100
What is the acceleration of a car that increases its velocity from 0 m/s to 14 m/s in 2 seconds.
a = 7 m/s2
100
If there is NO Air Resistance, which object hits the ground first? A bowling ball or Feather?
Neither, they BOTH fall at the same time
100
Which path had the greatest distance? WHY
Path 1 Because it had the longest length. The longest path traveled
100
How far will you travel in 90s running at a rate of 6 m/s?
x = 540m
100
A train moves from rest to a velocity of 25 m/s in 30.0 seconds. What is its acceleration?
a = 0.83 m/s2
100
If there is Air resistance, which object would hit the ground first? A Bowling Ball or Feather?
A Bowling Ball
100
Which path had the greatest displacement? WHY
Neither, they all had the SAME displacement.
They all start and end at the SAME place
100
How long will your trip take (in hours) if you travel 350 km at an average speed of 80 km/hr
t = 4.38 hours
100
How long will it take a car to go from rest to 150 m/s if they are accelerating at 60 m/s2 ?
t = 2.5 s
100
WHY would the feather hit the ground last if there was air resistance?
Because there was air resistance slowing it down