Answer:
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
A hypothesis is a proposed explanation made on the basis of limited information while a theory is a series of ideas intended to explain something.
True :)
Explanation:
the greater the <u>mass</u> of an object the more force is needed to cause acceleration
