Physics, asked by yodhvirsinghrai456, 6 months ago

the kinetic energy of an object of mass m moving with velocity of 3m/s is 20J. What will be it's kinetic energy is doubled? What will be its kinetic energy if velocity is increased by four times?​

Answers

Answered by Gopal5372
0

Answer:

Given, velocityofobject,v=5ms

−1

;

kineticenergyofanobject,E

K

=25J

E

K

=

2

1

mv

2

or 25=

2

1

×m×(5)

2

or m=

25

50

=2kg

When the velocity triples,

E

K

=

2

1

mv

2

=

2

1

×2×(15)

2

=225J

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