What is the acceleration of a car that goes from 0 to 20m/s in 7 seconds?
1 answer:
You might be interested in
Answer:
2Micro Farahds
Explanation:
Its in the picture.
I Hope it helps.
Answer:
The same amount of energy is required to either stretch or compress the spring.
Explanation:
The amount of energy required to stretch or compress a spring is equal to the elastic potential energy stored by the spring:
where
k is the spring constant
is the stretch/compression of the spring
In the first case, the spring is stretched from x=0 to x=d, so
and the amount of energy required is
In the second case, the spring is compressed from x=0 to x=-d, so
and the amount of energy required is
so we see that the amount of energy required is the same.