PLEASE HELP ASAP A 28.9-kg rock and a 46.6-kg rock are dropped from the same height and experience no significant air resistance. If it takes the 28.9-kg rock a time of 4 s to reach the ground, it must take the 46.6-kg rock s to hit the ground. Round your answer to one significant figure.

The kinetic energy also decreases when the particles in a liquid state decrease. the liquid is solidifying so the energy is cooling down.

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.