Question

A scooterist covers a distance of 3 km in 5 min. Calculate his speed in:

a) cm/s

b) m/s

c) km/h

Answer 1

Step 1, Given data
Distance = 3 km = $3000m=300000cm$
Time = 5 minutes = $300sec=\frac{5}{60}h$

1.

We know,

$Speed=\frac{Distance}{Time}$

Putting values

$Speed=\frac{300000}{300}$ = 1000 cm/s

2.

We know,

$Speed=\frac{Distance}{Time}$

Putting all the values

$Speed=\frac{3000}{300}$ = 10 m/s

3.

We know,

$Speed=\frac{Distance}{Time}$

Putting all values

$Speed=\frac{3}{\frac{5}{60}}$ = 36 km/h