For a certain spring, k = 15n/m. a weight is hung from the spring, stretching it from 0.3m to 0.4m. what force did the weight produce pls

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created or , but it can be

Could someone me find the answer to this problem.

The record distance in the sport of throwing cowpats is 81.1 m. this record toss was set by steve urner of the united states in 1981. assuming the initial launch angle was 45° and neglecting air resistance, answer the following. (a) determine the initial speed of the projectile. m/s