Find the length of the missing side. A) 1 ft B) 2 ft C) 3 ft D)

The answer is B

Step-by-step explanation:

on the left picture 5 * 5 = 25 sq ft

on the right picture, 5 * 2 - 10 sq ft

So the answer is B

the perimeter is increased by a factor of 2

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²