Question

On object has 25 Joules of Kinetic Energy. If the velocity of the object is doubled, what would be the result of the Kinetic Energy?

Answer 1

The kinetic energy would quadruple. See the explanation below, please.

Step-by-step explanation:

We use the formula of kinetic energy formula is:

Ec = 1/2 m x v ^ 2. . Take as an example a speed of 1m / s, and calculate the body mass:

25 J = 1/2 m x (1m / s) ^ 2 -> m = 25kgxm2 / s2x2 / 1 m2 / s2 = 50 kg

1J = 1 kgxm2 / s2

For a doubled speed: 2m / 2

Ec = 1/2 x 50kg x (2 m / s) 2 = 100J