Question

two cars are moving with velocity is 36 km per hour 54 km per hour on highway find the ratio of their Kinetic energies if mass of the cars are 400 kg and 600 kg respectively

Answer 1

$<b><u>Hey Mate ✌$

HERE IS YOUR ANSWER :-


m1 = 400 kg

m2 = 600 kg

v1 = 36 km/hr.

v2 = 54 km/hr.

K.E.1 / k.E.2 = ?

Kinetic energy = 1/2 (mv²)

K.E.1 = 1/2 [m1(v1)²]

= 1/2 [400 (36)²]

= 259200 J

K.E.2 = 1/2 [m2(v2)²]

= 1/2 [600 (54)²]

= 874800 J



K.E.1 / K.E.2 = 259200 / 874800

= 8 / 27 J

Ratio = 8 : 27


HOPE IT HELPS..

Answer 2

Explanation:

<b><u>HeyMate✌

HERE IS YOUR ANSWER :-

m1 = 400 kg

m2 = 600 kg

v1 = 36 km/hr.

v2 = 54 km/hr.

K.E.1 / k.E.2 = ?

Kinetic energy = 1/2 (mv²)

K.E.1 = 1/2 [m1(v1)²]

= 1/2 [400 (36)²]

= 259200 J

K.E.2 = 1/2 [m2(v2)²]

= 1/2 [600 (54)²]

= 874800 J

K.E.1 / K.E.2 = 259200 / 874800

= 8 / 27 J

Ratio = 8 : 27