The potential energy of the spring is 6.75 J
The elastic potential energy stored in the spring is given by the equation:

where;
k is the spring constant
x is the compression/stretching of the string
In this problem, we have the spring as follows:
k = 150 N/m is the spring constant
x = 0.3 m is the compression
Substituting in the equation, we get


Therefore. the elastic potential energy stored in the spring is 6.75J .
Learn more about potential energy here:
brainly.com/question/10770261
#SPJ4
In this problem, only the following pair of sentences describe people with same velocity: Valerie rides her bike south at 8 kilometers per hour. Owen jogs south at 8 kilometers per hour. In fact, both Valerie and Owen are moving at same speed (8 km per hour) in the same direction (south), so they have same velocity.