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- A sled, of mass 18.6 kg, is stationary when it starts to slide down an icy hill. The hill is 13.0 m tall. Assuming friction is minimal, what is the speed of the sled at the bottom of the hill? Give your answer in m/s to 1 decimal place.Timmy is sat down in class, looking around the room. He notices a water bottle on a desk next to him and thinks to himself that since the water bottle is on the desk it must not have kinetic energy. Is he right yes, or no? Explain?How much kinetic energy does a student of mass 60. kilograms running at 3.0 meters per second possess? A 180 J 270 J 540 J 8100 J
- A car accelerates uniformly from rest over a distance of 59.1 meters for 5.02 seconds and then maintains its speed. Once the car reaches this speed, its engine is delivering 51.2 kilowatts of power. At this speed, what is the magnitude of the drag force that resists the motion of the car?A 108 kg man is skiing across level ground at a speed of 9.5 m/s when he comes to the small slope 1.2 m higher than ground level shown in the following figure. -8.0 m- f1.2 m (a) If the skier coasts up the hill, what is his speed (in m/s) when he reaches the top plateau? Assume friction between the snow and skis is negligible. 8.16 m/s (b) What is his speed (in m/s) when he reaches the upper level if a 75 N frictional force acts on the skis? 6.31 X m/sThe figure below shows 6 different situations in which a box is released from rest at the top of a frictionless inclined plane. The masses and initial heights of the box are given in the figure. 1 kg 10 kg 10 m 5m I m 10 kg Ikg 5m 5m 1 m 0.5 m 15 kg 5 kg 75m 10 m 0.75 m 0.5m In which situation will the box have the greatest kinetic energy at the bottom of the incline? Situation A o Situation B O Situation C O Situation D O Situation E O Situation F