Speed and velocity
A distance-versus-time graph will never show a horizontal line
False, it will never show a vertical line
The slope of a line is found by multiplying the rise by the run
False, it is found by dividing
The SI unit for speed is m/min.
False, it is m/ hr.
On a distance-versus-time graph, a straight line indicates that an object's speed is zero
False, it is not zero it is constant (same)
A speedometer shows the instantaneous speed of a vehicle
True
Fluffy ran the 1,000-meter race in 2.5 minutes. Fluffy's average speed was 400 m/min.
True
On a distance-versus-time graph, a speed of zero would appear as a horizontal line.
True
Speed in a given direction is called velocity
True
Speed+direction=velocity
True
The average speed of an object is found by dividing the total distance by the total time
True
To describe an object's motion, you need know both its speed and its direction
True
