A rubber ball is dropped onto a ramp that is tilted at 20°, as shown in FIGURE P4.59. A bouncing ball obeys the “law of reflect ion,” which says that the ball leaves the surface at the same angle it approached the surface. The ball’s next bounce is 3.0 m to the right of its first bounce. What is the ball’s rebound speed on its first bounce?
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- Two spheres are launched horizontally from a 1.2 mm -high table. Sphere AA is launched with an initial speed of 4.5 m/sm/s . Sphere BB is launched with an initial speed of 2.5 m/sm/s . A. What is the time for the sphere AA to hit the floor? Express your answer using two significant figures. B. What is the time for the sphere BB to hit the floor? Express your answer using two significant figures.arrow_forwardA plane takes off and flies upwards at an angle of 24 degrees with a constant speed of 268 m/s. While the plane is flying upwards, a piece of the engine falls off when the plane reaches a height of 880 m. a. How long does it take the piece of the engine to reach the ground? Give answer in seconds. b. What so the horizontal distance covered by the piece of the engine before it lands? Give answer in meters.arrow_forwardA C-130 cargo drops a package of food supplies to refugees on the ground. It travels at a speed if 100 m/s and at an elevation of 2000 m. a. How long will it take the package to reach the ground? b. How far does the package travel horizontally while falling? c. Find the horizontal & vertical components of the package velocity just it strikes the ground.arrow_forward
- A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 18.0 below the horizontal. The negligent driver leaves the car in neutral, and unfortunately the emergency brakes are defective. The car rolls from rest down the incline for a distance of 30.0 m to the edge of the cliff, which is 45.0 m above the ocean. Ignore air and road resistance forces.A. . What is the velocity when the car hits the water?arrow_forward1f. A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of v0 = 18.5 m/s. The cliff is h = 20.0 m above a flat, horizontal beach as shown in the figure. With what speed and angle of impact does the stone land? vf = m/s ? = ° below the horizontalarrow_forwardAn object is thrown off the top of a building with velocity 36 m/s at an angle 18 degrees with respect to the horizontal. The object travels a horizontal distance of 269 m before landing on the ground. a. How high is the building in meters? b. What is the magnitude of the velocity of the object when it reaches the ground? c. What is the direction of the object when it reaches the ground, in degrees from the positive x axis?arrow_forward
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