Question

convert a.20 cm/hr in si unit
b.10 km/min in si​

Answer 1

Speed of a body is the distance covered by the body in unit time.

Therefore Speed=

\dfrac{Distance}{Time} which implies:

Distance = Speed \times Time

Time = \dfrac{Distance}{Speed}

1. In order to find speed, if :

Distance is in metre (m) and time in second (s); then the speed is in metre per second (m/s)

Distance is in Km (Km) and time in hour (h); then the speed is in Kilometer per hour (Km/h)

2. In order to find the distance, if:

Speed is in metre per second (m/s); time must be in second .

Speed is in Kilometer per hour (Km/h);time must be in hou