A net force of 20 N acting on a wooden block produces an acceleration of 4.0 m/s2 for the block. What is the mass of
the block?

From the second law of motion:

F = ma

we are given that the force applied on the block is 20N and the block accelerates at an acceleration of 4 m/s/s

So, F=  20N   and  a = 4 m/s/s

Replacing the variables in the equation:

20 = 4* m

m = 20 / 4

m = 5 kg

33: i think it’s b

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