Question

Julie is cycling at a speed of 3.4 meters/second. If the combined mass of the bicycle and Julie is 30 kilograms, what is the kinetic energy?

Answer 1

KE= 0.5(mv^2)

All of your variables are in standard units so you're good to just plug in

.5(30kg*(3.4m/s)^2)= 173.4 J

Answer 2

Answer: The kinetic energy of the Julie is 173.4 J

Step-by-step explanation:

Kinetic energy is defined as the energy which is possessed due to its motion.

It is also defined as the half of the product of mass of the object and square of the velocity of the object.

Mathematically,

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

where,

`E_K` = kinetic energy of Julie

m = mass of the Julie = 30 kg

v = velocity of Julie = 3.4 m/s

Putting values in above equation, we get:

`E_K=(1)/(2)* 30* (3.4)^2\\\\E_K=173.4J`

Hence, the kinetic energy of the Julie is 173.4 J