How much force is needed to accelerate a 68 kilogram-skier at a rate of 1.2 m/sec^2?

Answer: Force = 81.6 N

Explanation:

According to Newton's Second law:

F = ma - - - (1)

Where F = Force = ?

m = Mass = 68 kg

a = Acceleration = 1.2 m/s^2

Plug in the values in (1):

(1) = > F = 68 * 1.2

F = 81.6 N (The force needed to accelerate the skier at a rate of 1.2 m/s^2)