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An automobile traveling at 25 km/hour has kinetic energy equal to 1 x 10 4 J. What is the mass of the car? If the velocity of the car is increased to 45 km/hour, what is its kinetic energy? If the...

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An automobile traveling at 25 km/hour has kinetic energy equal to 1 x 104J.

  1. What is the mass of the car?

   

  1. If the velocity of the car is increased to 45 km/hour, what is its kinetic energy?

 

  1. If the velocity is increased to 80 km/hour, what is its kinetic energy?
Answered 108 days After Jun 05, 2022

Solution

Baljit answered on Sep 21 2022
65 Votes
Given :
Velocity of automobile, V=25km/hour=25000/3600m/s=6.94m/s
Kinetic Energy of the Automobile K.E=1x104J
We know that Kinetic Energy of the object=(1/2)*m*v2
here m is mass of the body in kilograms
v is the velocity of the body in m/s
1. mass of the object m= 2*k.E/v2
mass of the...
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