Answer:
20N
Explanation:
Ratio of N to cm-
10:2
so to make 2=4 times 2 so The ratio is now-
20:4
so to move 4 cm you need to push 20N.
Answer:
<h3>please type full question. Does not mean what you are trying to saying. </h3>
Answer:
Acceleration
Explanation:
A vector quantity has a magnitude and direction. Mass, Speed and Volume are all scalar quantities because they only have magnitude, and not direction.
Answer:
1373.4 N/m
Explanation:
Hooke's law states that the extension of a spring and force are related by the expression, F=kx where k is spring constant, x is extension of spring and F is the applied force. Making k the subject of the formula then

Also, F=gm hence the above formula is modified as

Taking g as 9.81 m/s2 , x as 0.5 m and m as 70 kg then
