If the child has a mass of 11.2 kg, calculate the magnitude of the force in newtons the mother exerts on the child under the following conditions. (b) The elevator accelerates upward at 0.774 m/s². Calculate the ratio of this force to the weight of the child. force child's weight (c) The elevator moves upward at a constant speed. Calculate the ratio of this force to the weight of the child. force child's weight (d) The upward bound elevator decelerates at 2.25 m/s² Calculate the ratio of this force to the weight of the child. force child's weight

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!