Question

A 8.642 kg rabbit is running across your back yard. If that rabbit has 125.6J of kinetic energy, how fast is it running

Answer 1

`\large\boxed{\large\boxed{5.391m/s}}`

Step-by-step explanation:

The kinetic energy, KE, of a moving object is given by the formula:

`KE=(1)/(2)mv^2`

Where:

• KE is the kinetic energy: 125.6J
• m is the mass of the object (rabbit): 8.642kg
• v is the speed of the object

Solve for v, substitute and compute:

`v=\sqrt{(2* KE)/(m)`

`v=\sqrt{(2* 125.6J)/(8.642kg)`

`v=5.391m/s`