What is the combination of all forces acting on an object?
100
The average speed of a runner who runs 500.0 meters in 1.6 minutes is
What is 5.2 m/s?
100
The temperature at which a substance changes from a liquid to a solid is the
What is freezing point?
200
The _________ of an object consists of its speed and direction.
What is velocity?
200
The equation for finding average acceleration for straight-line motion
What is final velocity - initial velocity / time?
200
The friction between objects that are not moving is called
What is static friction?
200
A car moving at an average speed of 55 mph for 4.25 hours has traveled
What is 234 miles?
200
The charge of an atom is
What is neutral?
300
Average speed can be represented by the mathematical expression
What is distance / time?
300
Speeding up, slowing down, and changing direction is best described as
What is acceleration?
300
Name the 4 fundamental forces
What is gravity, electromagnetic force, strong nuclear forces, weak nuclear force
300
Moving from 0 m/s to 25 m/s in 8.0 seconds equals an average acceleration of
What is 3.2 m/s^2.
300
The first step in the scientific method is usually
What is making an observation?
400
An object is in motion when
What is the object changes position relative to a stationary reference point?
400
What happens when a car slows down and velocity changes
What is negative acceleration?
400
Using lubricants on engine parts is an example of reducing
What is friction?
400
A cheetah can accelerate at up to 6.0 m/s^2. How long does it take for a cheetah to speed from 12.0 m/s to 24.0 m/s?
What is 2 seconds?
400
According to the law of conservation of mass
What is the total mass stays the same in changes of state?
500
Displacement must always indicate
What is direction?
500
Peter runs in a constant direction on a straight road. The velocity vs. time graphs of Peter's motion show a straight line with a negative slope. What does the line tell you about Peter's speed?
What is it is decreasing?
500
If the net force of an object is zero then the object as
What is balanced forces?
500
A cyclist is traveling at an initial speed of 10.0 m/s. She accelerates at a rate of 0.5 m/s^2. What is her final speed after 20 seconds?
What is 20 m/s?
500
Buoyant force is the ___________ force exerted on an object immersed or floating on a liquid.