Question

the change in velocity of a body in 30km/sec in 60 minute calculate the acceleration

Answer 1

Task. The change in velocity of a body in 30 km/sec in 60 minutes. Calculate the acceleration.

Solution. Acceleration is given by the following formula:

$a=\frac{\Delta v}{t},$

where

$\Delta v$

is the change of velocity, and $t$ is the corresponding time.

In our case

$\Delta v=30~{}km/s=30*1000~{}m/s=30000~{}m/s,$

and

$t=60~{}min=60*60~{}s=3600~{}s.$

Hence

$a=\frac{\Delta v}{t}=\frac{30000}{3600}=8.3~{}m/s$

Answer. $a=8.3~{}m/s$.