Question

A motorcyclist covers 150 meter in 10 seconds . The speed of the motorcyclist is

Answer 1

speed = distance /time

speed = 150/10

speed = 15m/h

Answer 2

Concept:

• Speed, a scalar quantity, describes "how quickly an object is travelling."
• We can think of speed as the rate at which an object travels a distance.
• An object moving quickly has a high speed and travels a fair distance in a brief period of time.

Given:

• Distance covered by the motorcyclist d = 150 m
• The time taken by the motorcyclist to cover 150 m t = 10 s

Find:

• The speed of the motorcyclist

Solution:

For a body under constant uniform motion, speed is the distance covered by the body per unit of time.

speed = distance/time

v = d/t

v = 150 m/ 10 s = 15 m/s

The speed of the motorcyclist is 15 m/s.

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