What is the displacement of a spring if it has a spring contstant of 10 n/m, and a force of 2.5 n is applied?

What is work? how much work is done to move an object 0 meters?

When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation

•• 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?