Question

en lergy OJ an ODJ 3. The kinetic energy of an object of mass, m moving with a velocity of 5 ms- is 25 J. What will be its kinetic energy when its velocity is doubled? What will be its kinetic energy when its velocity is increased three times? ​

Answer 1

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

Answer 2

Answer:

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