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**1. The problem statement, all variables and given/known data**

A man walking with aid of a cane approaches a skateboard (mass 3.5 kg) lying on the sidewalkk. Pushing with an angle of 60 down from the horizontal with his cane, he applies a force of 115N, which is enough to roll the skateboard out of the way.

a) calculate the horizontal force acting on the skateboard

b) calculate the initial acceleration of the skateboard.

**3. The attempt at a solution**

Fa = ma

115cos60 = 3.5(a)

a = 19.3 m/s2

Fx = 67.55 N.

My answer was wroung T_T

what did i miss?