А Spring is 100mm long when unstretched
A 40N load is hung from it, and its total
length increases to 120mm. A different load
on the spring, causes it to become 150 mm
long. If the spring obeys Hooke's Law,
this second load is...​

•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?

What’s #16 asking and how do i solve it?

Which is a substance that can be separated by physical means and is not the same throughout