a blue sphere and a red sphere with the same diameter are released from rest at the top of a ramp. the red sphere takes a longer time to reach the bottom of the ramp. the spheres are then rolled off a horizontal table at the same time with the same speed and fall freely to the floor. which sphere reaches the floor first? responses the red sphere the red sphere the blue sphere the blue sphere the sphere with the greater mass the sphere with the greater mass neither; the spheres reach the floor at the same time.
