Question

A body travels with a uniform speed of 15 m/s for 4 second and then continues with a uniform speed of 30 m/s for 6 second. Calculate the average speed of the body?

Answer 1

Answer:

24 m/s

Explanation:

First we have to find the distance covered:

Speed = Distance/Time

So, Distance = Speed × Time

• Speed = 15 m/s

Time = 4 sec

Therefore, Distance = 15 × 4 = 60m.

• Speed = 30 m/s

Time = 6 sec

Therefore, Distance = 30 × 6 = 180m.

Average speed = Total distance covered

speed = Total distance covered Total time required

That is, Average speed = 60 + 180

6 + 4

= 240

10

= 24 m/s.