1D Motion
2D Motion
Forces & Newton's Laws
Work, Power, Energy
Momentum & Impulse
100
If you calculate the slope of a position-time graph, what quantity of an object's motion have you calculated?
Velocity
100
Which equation would you use to solve the problem:
A person hikes 18m North and 7m West. What is their resultant displacement?
Pythagorean Theorem:
a2 + b2 = c2
100
What is the magnitude and direction of the net force acting on this object?
30 N, right
100
Which examples are examples of work being done?
Examples A & C
100
All objects are pushed for 2 seconds. Which two experience the same impulse?
Objects A and B
200
What type and direction of motion is shown by this v-t graph?
Acceleration (speeding up) in a negative direction
200
An object is launched horizontally at 8m/s. Describe what happens to the magnitude of the horizontal and vertical velocity as it flies.
Vertical velocity: Increases
Horizontal velocity: Stays constant
200
What is the term for the property of matter that causes an object to resist a change in its motion (remain at a constant velocity or at rest)? (AKA Newton's 1st Law)
Inertia
200
You do 300 J of work climbing the stairs in 4 seconds. If you climb the same stairs in 8 seconds, what happens to the amount of power used?
Power decreases
200
Two flower vases fall off the same shelf that is 2m off the ground. One lands on cement and the other lands on carpeting. They both experience the same change in momentum. Do they experience the same magnitude of impulse?
YES!
300
How would you find the acceleration of an object using only velocity and time information?
(vf - vi)/t
300
Which angle will result in the greatest RANGE for a projectile?
45 degrees
300
Which FBD is correct for an object at rest on an inclined plane?
FBD D
300
If the total energy at point 1 is 300 J, what would be the total energy at Point 2?
300 J
300
An object experiences a change in momentum of +20 kg m/s. What value of impulse caused that change in momentum?
20 N s or 20 kg m/s
400
Which of the following are vector quantities?
Time, velocity, speed, distance, displacement, acceleration
velocity, displacement, acceleration
400
Which of the following changes would result in an increase in the TIME in the air for a horizontally launched projectile:
Double the horizontal velocity
Double the launch height
Both changes will impact the TIME
Double the launch height
400
These two spring scales are pulling against each other. If spring scale A reads 18 N, what will spring scale B read?
18 N
400
An skateboarder starts with 400 J of PE and rolls down a rough ramp with a lot of friction. Would their kinetic energy at the bottom of the ramp be greater than, less than, or equal to 400 J?
Less than 400 J
(Some of the mechanical energy became thermal energy because of friction)
400
What would be the momentum of the circle after the collision based on conservation of momentum?
15 kg m/s