10. Block 1 with a mass of 1.0 kg slides down a frictionless ramp with a height of 3.0 m and cllides with block 2 which has a mass of 2.0 kg. The flat surface has friction with a friction coefficient of 0.50. 2 а. Determine the speed of block 1 when it reaches the bottom of the ramp.
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- A 3.80 kg block is pulled up a frictionless inclined plane by a 53.0 N force that is parallel to the plane, starting from rest.The normal force on the block from the plane has magnitude 10.4 N.What is the block's speed when its displacement up the ramp is 3.40 m?5 A sled is initially at rest at the top of a hill at an elevation 55.0 m higher than the elevation at the bottom. Find the speed of the sled after it slides without friction down the slope to the bottom. ch 7.42 m/s 32.8 m/s 10.5 m/s 23.2 m/sYou are designing a ski jump ramp for the next Winter Olympics. You need to calculate the vertical height h from the starting gate to the bottom of the ramp. The skiers push off hard with their ski poles at the start, just above the starting gate, so they typically have a speed of 2.0 m/s as they reach the gate. For safety, the skiers should have a speed of no more than 30.0 m/s when they reach the bottom of the ramp. You determine that for a 80.0 kg skier with good form, friction and air resistance will do total work of magnitude 4000 J on him during his run down the slope. 1) What is the maximum height h for which the maximum safe speed will not be exceeded? Express your answer in meters.
- A box of mass 4.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving down at a steady speed of 5.0 m/s for 8.0 m. Use g = 10 m/s2. Match the answers with questions. m v the final kinetic energy of the box (Kf) А. -320 J v the change in kinetic energy of the box (AK) В. 20 J C. 320 J D. 50 J E. -20 J F. -50 J G. OJ3) A 25kg bowling ball (traveling at 54 km/h) is traveling along a frictionless alley surface, when it enters a rougher patch of wood, with a coefficient of friction at 0.25. a. What will the speed of the bowling ball be after 12 meters? b. How far will the ball travel?A 69.0-kg skier with an initial speed of 12.8 m/s coasts up a 2.30-m high rise as shown. Find her final speed at the top, given that the coefficient of friction between her skis and the snow is 0.0760. K; V = ? 2.3 m 25°
- 5. A child slides down a slide with a 29° incline, and at the bottom her speed is precisely three-fifths what it would have been if the slide had been frictionless. Calculate the coefficient of kinetic friction between the slide and the child. E BO D TOL Ja B F 4S T T G MacBook Air B Y H U N 8 M MOSISO geA 6.00 kg block is pulled up a frictionless inclined plane by a 90.0 N force that is parallel to the slope of the incline, starting from rest. The normal force on the block from the plane has a magnitude of 18.5 N. What is the block’s speed when its displacement up the ramp is 4.00 m?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/s
- A 60.0 kg skier with an initial speed of 15 m/s coasts up a 2.50 m high rise as shown in the figure. what is her final speed given the coefficient of friction between her skies and the snow is 0.39Question 23 Two frisky otters slide down frictionless hillsides of the same height but different slopes. The slope of the hill of otter 1 is 30°, while the slope of the hill of otter 2 is 60°. If both start from rest, which otter is moving faster when she reaches the bottom of her hill? O The otter that took the shorter time is moving faster. O Otter 2 is moving faster. O The heavier otter is moving faster, no matter which hill she used. O Otter 1 is moving faster. O Both otters have the same speed at the bottom.7. An 8.00 kg block is released from rest and slides 1.60 m down a 40° slope. Its speed at that point is 4.00 m/s. Find the magnitude of the frictional force on the block. 'i= 0 m/s V2= 4 m/s 1.6 m 40°