A quarterback throws a ball with an initial speed of 7.35 m/s at an angle of 63.0° above the horizontal. What is the speed of the ball when it reaches 2.20 m above initial throwing point? You can assume air resistance is negligible.
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- An object is thrown with an initial speed of 15 m/s at an angle of 35.0 degrees above the horizontal from the top of a 30.0-m-tall tower. Assume air resistance is negligible, and g = 9.8 m/s2. What is the speed of the object as it hits the ground? An object is thrown with an initial speed of 15 m/s at an angle of 35.0 degrees above the horizontal from the top of a 30.0-m-tall tower. Assume air resistance is negligible, and g = 9.8 m/s2. What is the speed of the object as it hits the ground? 25.7 m/s 21.7 m/s 26.8 m/s 28.5 m/sat an amusement park, a swimmer uses a water slide to enter the main pool.the swimmer slides without friction, and descends through a vertical height of 2.49m. find the swimmers speed at the bottom of the slide if she starts with an initial speed of 0.850m/sTo enter the main pool at an amusement part, a swimmer uses a water slide which has a vertical height of 2.83 m. Find her speed at the bottom of the slide if she starts with an initial speed of 0.750 m/s.
- A ball has a mass of 0.150 kg and is given an initial speed of 20.4 m/s. When the ball is at a height of 15.3 m above the point it is thrown, what is its speed? Ignore air resistance.A cyclist coasts up a 10.7 degrees slope, traveling 24.0 m along the road to the top of the hill. If the cyclist's initial speed is 9.70 m/s, what is the final speed? Ignore friction and air resistance.The drawing shows a skateboarder moving at 6.90 m/s along a horizontal section of a track that is slanted upward by 0 = 46.0° above the horizontal at its end, which is 0.510 m above the ground. When she leaves the track, she follows the characteristic path of projectile motion. Ignoring friction and air resistance, find the maximum height H to which she rises above the end of the track. Number 6.90m/s i H 0.510m Units
- Question 6. The skateboarder in the drawing starts down the left side of the ramp with an initial speed of 5.9 m/s. Neglect nonconservative forces, such as friction and air resistance, and find the height h of the highest point reached by the skateboarder on the right side of the ramp. Ans: 1.8 m AllYou are designing a ski jump ramp for the 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 that 30.0 m/s when they reach the bottom of the ramp. You determine that for an 85.0 kg skier, friction and air resistance will do a total work magnitude 4000 j on him during his run down the slope. What is the maximum height (h) for which the maximum speed will not be exceeded?Salim who participates in motor race, leaves the end of a ramp as in Figure. If his speed is 85.0 km/r when he reaches the peak of the path, what is the maximum height that he reaches? Ignore friction and air resistance.
- A child starts from rest and slides without friction from a height of h = 7.1 m along a slide next to a pool (see figure). She is launched from a height of 1.3 m (ignore the h/5 in the figure) at an angle of 21° into the air over the pool. Use g=9.8 m/s2. Ymax th/5 What is her maximum height above the water after leaving the slide? Hint: it is possible to do this without doing projectile motion, even desirable as we are trying to learn conservation of energy; this problem does require you to use conservation of energy more than once.The drawing shows a skateboarder moving at 6.80 m/s along a horizontal section of a track that is slanted upward by 0 = 41.0° above the horizontal at its end, which is 0.780 m above the ground. When she leaves the track, she follows the characteristic path of projectile motion. Ignoring friction and air resistance, find the maximum height H to which she rises above the end of the track. 6.80m/s 0.780mGayle runs at a speed of 3.20 m/s and dives on a sled, initially at rest on the top of a frictionless snow-covered hill. After she has descended a vertical distance of 5.00 m, her brother, who is initially at rest, hops on her back and together they continue down the hill. What is their speed at the bottom of the hill if the total vertical drop is med ocum 15.0 m? Gayle's mass is 49.5 kg, the sled has a mass of 5.45 kg and her brother has a mass of 30.0 kg. m/s Need Help? Read It gy