A hockey puck sliding on a frozen lake comes
to rest after traveling 176 m.
If its initial velocity is 2.3 m/s, what is its
acceleration

Respuesta :

Given parameters:

Distance traveled  = 176m

Initial velocity  = 2.3m/s

Unknown:

Acceleration  = ?

Solution:

Acceleration is the change in velocity with time. To solve this problem, we apply one of the motion equations;

              V²   = U²  + 2as

 where V is the final velocity

              U is the initial velocity

               a is the acceleration

               s is the distance

       final velocity is 0;

                   0²  = 2.3² + 2 x a x 176

                   -5.29  = 352a

                    a  = - [tex]\frac{5.29}{352}[/tex]   = - 0.015m/s²