Answer:
12
Step-by-step explanation:
The equation is w= f *d
36=3*d
12=d 12 units is the mass
8kg
Kinetic energy = 1/2 mv^2
Where
M = mass
V = speed or velocity
Given
Kinetic energy = 36
V = 3m/s
Therefore
36 = 1/2 x m x 3^2
36 = 1/2 x m x 3 x 3
Multiply through
36 = m x 9 /2
Cross multiply
36 x 2 = m x 9
72 = m x 9
Divide both sides by 9
72/9 = m x 9/9
8 = m
m = 8kg
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