define average speed, average velocity and acceleration
Answers
Answer:
The average speed of an object is defined as the distance traveled divided by the time elapsed. Velocity is a vector quantity, and average velocity can be defined as the displacement divided by the time.
Explanation:
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Explanation:
AVERAGE SPEED - DEFINITION
Average speed is defined as the total distance travelled by the body in total time i.e.
Average Speed=Total timeTotal distance
It is a scalar quantity. Its unit is m/s.
AVERAGE VELOCITY - DEFINITION
Average Velocity=Total timeTotal Displacement
It is a vector quantity and has units of m/s.
Magnitude of average velocity is always less than or equal to the average speed because displacement is always smaller than or equal to distance.
ACCELERATION - DEFINITION
Acceleration is the rate of change of velocity. Usually, acceleration means the speed is changing, but not always. When an object moves in a circular path at a constant speed, it is still accelerating, because the direction of its velocity is changing.
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