Show:
General Science and Math
Motion
Newton's Laws + Forces
Momentum
Work and Energy
100
The variable controlled by the experimenter.
What is the independent variable?
100
The displacement of an object that moves 5 meters to the right and 12 meters to the left in 3 seconds.
What is -7 meters?
100
The definition of inertia?
What is the resistance to change in motion (acceleration)?
100
The definition of momentum
What is the "quantity of motion" or mass times velocity?
100
The initial and final forms of the energy that lights the room?
What are electrical and radiant?
200
The role of gas mileage in an experiment that changes the size of car tires to see if gas mileage is affected.
What is dependent variable?
200
The velocity of an object that moves 5 meters to the right and 12 meters to the left in 3 seconds.
What is -2.33 m/s?
200
The force diagram for a hockey puck sliding to the right at a constant speed over frictionless ice.
What is a box with equal arrows for gravity pulling down and normal force pushing up?
200
The result of an inelastic collision.
What are two objects stuck together to form one that carries all of the total momentum?
200
The energy of a 10 kg object moving 10 m/s
What is 500J?
300
A graph of the data if the experimenter measures gas mileage of 30 mpg, 25 mpg, and 20 mpg for tire sizes 18 in, 20 in, and 22 in.
What is mileage on the vertical axis, tire size on the horizontal axis, points (18,30), (20,25), and (22,20) plotted accurately?
300
The position graph of a person that walks, then jogs, then runs back towards position zero.
What is a graph that slopes towards position=0, first not very steep, then steeper, then even steeper?
300
The Newton's third law pair for the chair pushing you up as you sit on it.
What is you pushing the chair down?
300
The object that experiences a bigger change in momentum when a 70kg skier pushes his 50kg friend from behind on a catwalk.
What is neither? They both experience the same change in momentum.
300
A student uses 2.45 N of force to pull a string 1 m. How high would his machine lift a 1 kg object
What is .25 meters?
400
The slope of the line between points (18,30) and (22,20).
What is -10/4?
400
The velocity graph of a person that walks, then jogs, then runs backwards towards position zero.
What is flat lines with negative y-values first small, then more negative, then even more negative?
400
The tension in a cable that supports two masses, one with a mass of 20 kg and one with a mass of 30 kg.
What is 490N?
400
The momentum with units of a 1000 kg car travelling 25 m/s to the left.
What is -25000kgm/s or 25000kgm/s to the left?
400
The final speed of a 2kg car travelling 5 m/s at the bottom of a hill, after climbing a 1 meter hill.
What is 2.3 m/s?
500
The y-intercept of the line that goes through points (18,30) and (22,20)
What is 15?
500
The displacement of an object that slows from 15 m/s to 5 m/s in 5 seconds.
What is +50 meters?
500
The force of friction acting on a 10kg object that is being pushed with 200N to the right, but accelerating to the left at 5 m/s^2.
What is -250N or 250N to the left?
500
The final speed of a 10 ton truck travelling 60 mph east after crashing into a 1 ton car going 60 mph west (they stick together).
What is 49 mph?
500
The final height of an 10 kg object that is lifted by a student using a 24.5N force for a distance of 1 meter.
What is 0.25 meters?