You walk 45 m to the north, then turn 90° to your right and walk another 45 m. how far are you from where you originally started? a. 64 m b. 41 m c. 85 m d. 45 m

A

This is a right triangle with legs 45 and 45 . Calculating the hypotenuse gives the distance from the starting point

let hypotenuse be h, then using Pythagoras' identity

h = √(45² + 45² ) = √4050 = 63.6396.. ≈ 64

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )

an electric circuit