Question

A a scooterist covered a distance of 3 deca metres in 5 minutes .Calculate its speed in
a)metres per second.
b)cm per second.
c)kilometres per hour.

Answer 1

3 decameter = 30meter
5min=5×60sec=300second

(1) speed(in m/s)=

(2) 1meter=100cm
=> 0.1meter= 10cm
=>10cm/sec

(3) (value in m/s)×(18/5)= (value in km/hr)
=> 0.1m/s×(18/5)=0.36km/hr