younger brother, who weighs 90 kg on a sled, which weighs 10 kg up a hill in December. The hill has a coefficient of kinetic friction of 0.313 and static friction of 0.427. After reaching the top, the older brother pushes the little brother on the sled with a force of 100 Newtons. How much force in newtons is required to move the sled with a constant velocity. How far with the little brother go before he stops if the hill is 10 meters tall and the flat ground before the hill has a coefficient of friction of 0.214. The hill is at an angle of 20 degrees above the horizontal Please help fast

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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!