A small 22 kilogram canoe is floating downriver at a speed of 1 m/s. What is the canoe's kinetic energy?

Kinetic energy is expressed through the formula Ke=1/2mv^2, where Ke is measured in Joules (kg•m^2/s^2). For this problem, just plug in the given values:

Ke=1/2mv^2

Ke=1/2 (22kg) (1m/s) ^2

Ke=1/2 (22) (1)

Ke=11

This canoe, with a weight of 22 kg and a speed of 1 m/s, has a kinetic energy equal to 11 Joules.