Acceleration is defined as the change in velocity divided by ______________.
time
100
The SI unit for acceleration is what?
m/s2
100
What is net force?
The sum of the forces acting on an object
100
The speedometer on your car reads _____________ speed.
Instantaneous
200
In order to determine speed, you must know
time and distance
200
If you are traveling at a constant velocity, your acceleration is what?
0 m/s2
200
The SI unit of force, named for the scientist who described the relationship between motion and force, is called the ________________.
Newton
200
If you divide momentum by velocity, you get the object's ____________.
mass
200
To find weight you:
multiply mass by acceleration due to gravity
300
A runner in track runs 500 meters in 50 seconds. What was the runner's average speed?
10 m/s
300
What is the value for acceleration due to gravity?
9.8 m/s2
300
The law that states that every object maintains constant velocity unless acted on by an unbalanced force is _____________________.
Newton's 1st Law
300
Friction is defined as:
force that opposes motion between two surfaces touching
300
A parachute works thanks to what force?
Air Resistance
400
A train's average speed is 110 km/hr, and it traveled 2.5 hours. What distance did it travel?
275 km
400
A train is headed north when it slows from 15m/s to 0m/s in 5s. What is its acceleration?
-3m/s2
400
The law that states that for every action force there is an equal and opposite reaction force is _______________.
Newton's 3rd Law
400
A 10kg dog chasing a rabbit at 6.0 m/s has a momentum of:
60 kg-m/s
400
A sprinter runs 300m west then turns around and goes 100m east. Her displacement is:
200m West
500
A student rides her bike to school. Her school is 5 miles from her home. She travels at an average speed of 10 mph. How much time is needed for her trip?
0.5h
500
What is the necessary force for a 1,000 kg automobile to accelerate forward 2 m/s?
2,000N
500
What is the SI unit for momentum?
kg-m/s
500
What is the mass of an object accelerating at 10 m/s2 when a force of 1000N is exerted?
100kg
500
Which of Newton's Laws does the following represent: a subway train stops and you continue to move forward.