Grace pushes her foot against the wall with a force of 35 n while she stands
on a skateboard. her mass, including the skateboard, is 55 kg. what is her
rate of acceleration?

a. 1.6 m/s2

b. 0.64 m/s2

c. 90 m/s2

d. 20 m/s

The correct answer is B. 0.64 m/s²

Explanation:

According to the Newton's Second law of motion acceleration of an object by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force.

Mathematically,

                           F ∝ a

                           F = ma

Given data:

Force = F = 35 N

Mass = m = 55 kg

acceleration = a = ?

                           F = ma

                           a = F/m

                           a = 35/55

                          a = 0.64 m/s²

a displacement distance is size of displ