What is the acceleration of a hockey player if he/she is skating at 18 m/s comes to a complete stop in 3 SEC?

If a hockey player is skating at 18 m/s and comes to a complete stop in 3 seconds his acceleration would be -6m/s/s. Finding acceleration involves using a formula that divides distance per time by time coming out with distance per time squared.

In this case the initial velocity of 18 m/s divided by the time of 3 seconds comes out to an equation that divides 3 by -18 arriving at the answer of -6 m/s/s. Calculating the acceleration of anything can seem quite tedious but with practice it will come more easily than one would initially expect.