A stone is throne vertically upwards from a cliff edge at an initial speed of 10 m/s. It misses the clifftop on the way down, ultimately entering the sea. Ignoring air resistance, how long in seconds does it take for it to enter the sea where the clifftop is 210 m above sea level? 3.5 11 7.6 8.9 5.2 13
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- A volcano erupted and spit a rock in the atmosphere at an angle of 35 degrees with the horizontal with an initial velocity of 25m/s. The rock hit the ground 20 meters below the crater. How far in meters that the rock has reached? O 81 60 O 18 25An Olympic diver is on a diving platform 4.60 m above the water. To start her dive, she runs off of the platform with a speed of 1.23 m/s in the horizontal direction. What is the diver's speed, in m/s, just before she enters the water? m/sA stone is thrown from the top of a 59.4 m high rock. The vertical component of the initial speed of the stone is 19.5 m / s upwards. How long does the stone spend in the air? Suppose the soil at the base of the rock is flat.
- 69. A golf ball rolls off a horizontal cliff with an initial speed of 11.4 m/s. The ball falls a vertical distance of 15.5 m into a lake below. (a) How much time does the ball spend in the air? (b) What is the speed v of the ball just before it strikes the water?Gabriel kicks a soccer ball with an initial velocity 22 meters per second, at an angle of 16o above the ground. What is the vertical component of the initial velocity? 21 m/s 6.1 m/s −21 m/s −6.1 m/s2.70 You are on the roof of COAS, 46.0 m above the ground. Your physics professor, who is 1.80 m tall, is walking alongside the building at a constant speed of 1.20 m/s. If you wish to drop an egg on your professor's head (which I would never recommend actually doing!), where should the professor be when you release the egg? Assume the egg is in free fall. v = 1.20 m/s 1.80 m - 46.0 m
- An airplane traveling horizontally 1600 m above the ocean at 68.2 m/s must drop a box of rescue supplies to sailors stranded on a remote island. 3. How many seconds before being directly above the sailors should the pilot release the box of rescue supplies? (Air resistance is negligible.) a. Time = b. Given the drop time above, what is the horizontal distance between the airplane and the stranded sailors when the box of rescue supplies must be released? (Air resistance is negligible.) Distance =A stone is projected vertically upward from the top of a 120-m high tower at a initial velocity of 36 m/s. What is the vertical distance between the stone and the ground after t = 9 seconds? O 46.70 m O 73.30 m O 166.70 m O 193.30 mS. A stone thrown horizontally from the top of a tall building takes 7.56 s to reach the street. How high is the building?
- A volcano erupted and spit a rock in the atmosphere at an angle of 35 degrees with the horizontal with an initial velocity of 25m/s. The rock hit the ground 20 meters below the crater. What is the downward velocity of the rock before hitting the ground in m/s? O 24.45 O 20.5 O 12.5 O 15The NEXT morning, you wake up in a strange room yet again, and this time you drop a ball from a height of 1.54 m above the floor. The ball hits the floor 0.392 s after your drop it. You guess that you must have been taken to an alien planet with gravity different from Earth s. What is this planet s g (that is, the magnitude of the acceleration due to gravity on this planet)? 10.0 m/s^2 15.0 m/s^2 30.0 m/s^2 20.0 m/s^2B) A water balloon is launched at a speed of (15.0+A) m/s and an angle of 36 degrees above the horizontal. The water balloon hits a tall building located (18.0+B) m from the launch pad. At what height above the ground level will the water balloon hit the building? Calculate the answer in meters (m) and rounded to three significant figures. A=20 B=8