Question

calculate the kinetic energy of a 820 kg compact car moving at 23 m/s.

Answer 1

216,890 J

Step-by-step explanation:

We first define the Kinetic Energy Formula:

K.E =

`(1)/(2) m {v}^(2)`

where m is the mass of the object in kg, and v is the velocity in m/s.

Given from the information from the question, we substitute the values in to find K.E.

K.E of car =

`(1)/(2) (820) {(23)}^(2) \\ = 216890 \: joules`

Note that the SI unit for Energy is Joules or J.