0. A car is moving with a speed of 15 km - and
another identical car is moving with a speed of
30 km hl. Compare their kinetic energy.
Answers
Answered by
2
Answer:
A car is moving with a speed of 15 km
another identical car is moving with a speed of 30 km hl .
= 30 - 15
= 25 speed km hour
Answered by
1
Answer:
Two identical cars mean, they have equal mass
K.E = 1/2 mv 2
Let m be the mass of each car
Kinetic energy of car A=1/2M x (15)2
=225/2
=112.5 M J
Kinetic energy of car B = 1/2 M (30)2
= 450 M J
Kinetic energy of car A/Kinetic energy of car B =112.5/450
=1/4
=1:4
K.E. of car B is 4 times K.E. of car A.
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