Question

Please help.

Calculate the velocity of:
A bus travelling through town, with a mass of 5040 kg and kinetic energy of
493,900 J.

Answer 1

Step-by-step explanation:

mathematically,

`kinetic \: energy \: = (1)/(2) m {v}^(2)`

where m= mass

and v=velocity

given that,

kinetic energy=493900J

mass =5040kg

making velocity the subject

`v = \sqrt{ (2 * kinetic \: energy)/(mass) }`

substitute their values in the formula

`v = \sqrt{ (2 * 493900)/(5040) }`

`v = \sqrt{ (987800)/(5040) }`

`v = √(196)`

`v = 14m {s}^( - 1)`

Thus the velocity is 14meters per second