Question

What is the K.E. of 2000 Kg car travelling at 90 Km/h.​

Answer 1

Answer:

KE= $\frac{1}{2} mv^2$

Explanation:

Answer 2

Answer:

The K.E. of 2000 Kg car traveling at 90 Km/h will be $625000 \ J$

Explanation:

Let m be the mass and v is the velocity of the object. Then the expression used for kinetic energy can be written as,

Kinetic energy (K.E) = $\frac{1}{2} m v^{2}$      ...(1)

In the question, it is given that,

$m = 2000\ kg$

$v= 90\ km/h = 90\times \frac{5}{18} = 25\ m/s$

Substitute the values of 'm' and 'v' into equation (1),

$K.E = \frac{1}{2}\times 2000\times 25^{2} = 625000 J$

Thus the kinetic energy of the car =  $625000 \ J$