A skier weighing 60 kg rolls down the mountain. Moreover, for any 3 s. its speed increases by 1.5 m / s

A skier weighing 60 kg rolls down the mountain. Moreover, for any 3 s. its speed increases by 1.5 m / s. Determine the resultant of all forces applied to the skier.

Given:

m = 60 kilograms – the mass of a skier rolling down a mountain;

t = 3 seconds – time interval;

dV = 1.5 m / s – change in speed over a period of time t.

It is required to determine the resultant of all forces acting on the skier F (Newton).

According to Newton’s second law, the resultant of all forces imparts acceleration to the skier:

F = m * a = m * dV / t = 60 * 1.5 / 3 = 90/3 = 30 Newtons.

Answer: the resultant of all the forces acting on the skier is 30 Newtons.