As a wave moves through a medium, particles are displaced and (2 points)
a: return to their normal position after the wave passes.
b: remain in the new location after the wave passes.
c: are combibed with other particles forming the wave.
d: are moved along with the wave as it travels through the medium.

A

Explanation:

Particles are displaced and return to their normal position after the wave passes

return to their normal position after the wave passes.

Explanation:

When a wave passes through a medium, it displaces particles. The position of maximum displacement is called the amplitude of the wave. How ever, a restoring force acts on the particle. This force is usually directed towards the mean rest position of the particle.

Hence after the wave passes, the particle is restored back to its mean rest position.

the part of the wave he is travelling on is the crest

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer