Question

Starting from rest, a 29.2 kg child rides frictionless ski slope. At the bottom of the hill, her speed is 8.25 kg sled down a a 6.8 m/s. If the slope makes an angle of 15.5° with respect to the horizontal, how far along the hill did she slide on C her sled? 0.235 distance

Answer 1

Concept - here friction is absent on the slope. Hence, energy will be conserved. We apply work energy theorem where the work done by the gravity causes an increase in kinetic energy of the ski as it reaches near bottom.

Wrowity (omgsine)d AE mgsine - A 6-8m)s) 2 2 V. d 2gsino 8.83 momentum, P = l1 kinetic enray 2. m v 2. 2K m2v2 2Km 2. 2Km 2Km p2 for both K P is same 2m wi) have one oith greater Henc the mass mpared to the lkinehic enurgy Linetic enrg Less Co Of dhe one withw dhe Smaller mas

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