You shoot a ball straight up with an initial speed of 8490 m/s. When it reaches a height of 4.0 x 10 6 m above the surface of the earth, what is the speed of the ball? O 2146 m/s O 2956 m/s 3546 m/s 4009 m/s 4588 m/s 4876 m/s 0000
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- A 15 kg ball is thrown straight upward with a speed of 22 m/s. What is the maximum height the ball reaches?Superman throws a chocolate-covered peanut into the air and catches it in his mouth 6 seconds later. a) How fast did he throw the peanut? ______ b) What if Superman is on Planet Krypton, where g = 15 m/s2 ? ______ c) What if Superman is on the moon, where g is approximately -2 m/s2 ? ______he weighs 46 kg
- 5 3 1 1 2 3 4 5 8 T(s) What is the object's average velocity betweent = 0 and t = 3 s? 1 m/s 2 m/s 9 m/s 3 m/s 6 m/s (s/u) A4, Time t (s) Position x (m) Velocity v (m/s) v/t (unit=s) 1 0.167 0.257 0.5005 0.7007 0.449 O.140 0.59% 0.633 0.412 0.663 0.574 0.623 0,377 0.901 t.1015 1.3020 0.504 0.673 10868 1.071 1.305 0.646 0.593 6. 15025 0.972 1.7031 1,9038 8.The fishing boat was moving on a river. The paddle fell into the water as it crossed the bridge. After an hour, the fisherman notices the disappearance of the paddle and turns back, finding his paddle 6 km below the bridge. How fast is the river? (Suppose the speed of the (fisherman is the same in the opposite direction of the water
- Use the following information to answer the next two questions The year is 1927. You are a crime scene investigator. You are considering pressing reckless driving charges against the driver of Car 2. To do this, you must find the speed of Car 2 before the crash. Allegedly, Car 1 was parked, when Car 2 crashed into it. Using the skid pattern, you determine that the speed of the two joined vehicles was 17 m/s immediately following the impact. Car 1 has mass of 1800 kg and Car 2 has a mass of 1100 kg.A 150kg fish swimming at 8.0m/s swallows a 15kg fish swimming towards it at 4.0m/s. What is the speed of the larger fish immediately after eating the little fish?An enthusiastic NVCC student goes to an amusement park to ride on a roller coaster. The height of the first hill is 80m. If the cart is moving at 4.4m/s at the top of this hill and the entire roller coaster is frictionless, at what speed is the cart moving when it returns back to the level of the ground? If the cart then goes up another hill that is 25m tall, how fast is it going as it goes over the top of that hill?
- 6. A crazy, young boy on a sled is able to get up to an incredible speed of 22.5 m/s (yes, he is wearing a helmet!) along a frictionless horizontal surface while he approaches an icy hill with a vertical height of 11 m, as shown. He makes it to the top, and then flies off horizontally from the ledge of the hill. How far from the base of the hill does the boy land? 225 mis Figure 1You go watch your friend as she runs at a cross country meet. The first time she passes you, your friend runs by going due north at a speed of 4.40 m/s. You move to a different place on the course and twelve minutes after you saw her the first time, your friend runs past you again. This time she is traveling at a speed of 3.80 m/s in the direction 30.0◦ W of S. What is the direction of her average acceleration between those same two times?A child throws a stone downward from the top of a cliff with a speed of 4m/s. You notice that it took 2 seconds for the stone to hit the ground. What is the height of the cliff? (Start with a function for the acceleration using g ≈ 9.8m/s2 .