A net force of 40N south acts on an object with a mass of 20 kg. what is the object's acceleration? A. a= 4 m/s2 north
B. a= 20 m/s2 north
C. a= 10 m/s2 south
D. a= 2 m/s2 south

Force is proportional to acceleration, so both the force and acceleration vectors should have the same direction of north.

Specifically, Newton's second law says that F = m a. Omitting direction, we can solve for a :

40 N = (20 kg) a   ==>   a = (40 N) / (20 kg) = 2 m/s²

so the answer is D.

step-by-step explanation:

12475909

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !