Question

A 1500-kg automobile is travelling at a velocity of 120m/s. How much kinetic energy does it possess? ​

Answer 1

Answer:

The kinetic energy is $10.8MJ$ or  $108 * 10^{5} Joules$

Explanation:

Kinetic energy can be defined as an energy possessed by an object or body due to its motion.

Mathematically, kinetic energy is given by the formula;

$K.E = \frac{1}{2}MV^{2}$

Where, K.E represents kinetic energy measured in Joules.

M represents mass measured in kilograms.

V represents velocity measured in metres per seconds square.

Given the following data;

Mass of automobile = 1,500kg

Velocity = 120

$K.E = \frac{1}{2}MV^{2}$

Substituting into the equation, we have;

$K.E = \frac{1}{2}*1500*120^{2}$

$K.E = \frac{1}{2}*1500*14400$

$K.E = 750*14400$

K.E = 10,800000 Joules or 10.8MJ

Note: MJ is Megajoule

Therefore, the kinetic energy possessed by the automobile is $10.8MJ$ or  $108 * 10^{5} Joules$