19. An object of mass 20 kg is dropped on a spring wh- ich is placed 5 m below. If the spring has a force
constant of 5 x 104 Nm, the maudimum compressi-
on of the spring is
A 10 m B.0.5 m C.0.2 m D.0.04 m​

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?