Question

If a sprinter runs a distance of 100 meters in 9.5 seconds calculate his average speed in km/ h.

Answer 1

Answer :

Given -

• Distance = 100 m
• Time = 9.5 s

To Find -

• Average Speed in km/hr ?

Solution -

Avg. Speed = Distance/Time

⇒ Avg. Speed = 100/9.5

⇒ Avg. Speed = 10.52 m/s

Hence, Speed (Average Speed) is 10.52 m/s.

Additional Information -

• Distance is the length of the total path travelled.

• Displacement is the shortest distance between the initial position and the final position of the object.

• Distance is a scalar quantity and Displacement is a vector quantity.

• Speed is Distance travelled in per unit time.

• Velocity is Displacement in per unit time.

• Speed is a scalar quantity and velocity is a vector quantity.