At a waterpark, sleds with riders are sent along a slippery, horizontal surface by the release of a large compressed spring. the spring with force constant k = 40.0 n/cm and negligible mass rests on the frictionless horizontal surface. one end is in contact with a stationary wall. a sled and rider with total mass 70.0 kg are pushed against the other end, compressing the spring 0.375 m. the sled is then released with zero initial velocity. part a what is the sled’s speed when the spring returns to its uncompressed length?

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

t = 1/400 h   ⇔ 0.0025 h ⇔ 9s ⇔ 0.15 m

any of the answers are correct.

80cm/s.

24cm/s.

53.3cm/s.