Question

A small 17 kilogram canoe is floating downriver at a speed of 2 m/s. What is the

canoe's kinetic energy?
Your Answer:
Answer:
units:

Answer 1

Hello!

The answer is:

Answer: 34

Units: Joules

`KE=34J`

Why?

The kinetic energy is the work needed to accelerate an object to a determined speed.

The kinetic energy can be calculated using the following equation:

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

Where,

m, is the mass of the object.

v, is the speed of the object.

So, we are given the information:

`mass=17kg\\\\v=(2m)/(s)`

Then, substituting and calculating we have:

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

`KE=(1)/(2)*17kg*((2m)/(s))^(2)`

`KE=8.5kg*((4m^(2))/(s^(2)))`

`KE=34(kg.m^(2))/(s^(2))=34J`

Have a nice day!