From a cliff that is 9.30 m above a lake, a young woman (mass =
45.0 kg) jumps from rest, straight down into the water. At the
instant she strikes the water, what is her de Broglie
wavelength?
From a cliff that is 9.30 m above a lake, a young woman (mass = 45.0...
A ball is thrown off a cliff overlooking a lake. The cliff is 9.60 m above the lake. The ball has an initial speed of 2.85 m/s and is thrown at an angle of 20.0° below the horizontal. (a) Calculate the time after the ball is thrown until it strikes the water. (b) Calculate the ball’s speed just before striking the water. (c) How far from the base of the cliff does the ball hit the lake? (d) Sketch the...
At t = 0, a stone is dropped from a cliff above a lake; 2.4 seconds later another stone is thrown downward from the same point with an initial speed of 47 m/s. Both stones hit the water at the same instant. Find the height of the cliff.
At t = 0, a stone is dropped from a cliff above a lake; 2.4 seconds later another stone is thrown downward from the same point with an initial speed of 35 m/s. Both stones hit the water at the same instant. Find the height of the cliff in meters.
1. A ball is thrown off a cliff overlooking a lake. The cliff is 9.60 m above the lake. The ball has an initial speed of 2.85 m/s and is thrown at an angle of 20.0° below the horizontal. (a) Calculate the time after the ball is thrown until it strikes the water. (b) Calculate the ball’s speed just before striking the water. (c) How far from the base of the cliff does the ball hit the lake? (d) Sketch...
A 2.7-kg ball is thrown upward with an initial speed of 20.0 m/s from the edge of a 45.0 m high cliff. At the instant the ball is thrown, a woman starts running away from the base of the cliff with a constant speed of 6.00 m/s. The woman runs in a straight line on level ground, and air resistance acting on the ball can be ignored. 1.At what angle above the horizontal should the ball be thrown so that...
A woman of mass 50 kg jumps off the bow of a 60 kg canoe that is intially at rest. If her velocity is 4.5 m/s to the right, what is the velocity of the canoe after she jumps? Answer in units of m/sˆı.
A car is parked on a cliff that slopes downward by 18.7° below the horizontal. The brakes give out and the car rolls from rest down the cliff. It leaves the edge of the cliff at 21 m/s. The edge of the cliff is 15 m above the ocean. What is the car’s horizontal position relative to the base of the cliff at the instant the car strikes the water? Take the acceleration of gravity to be 9.8 m/s. Can...
Problem 3. A bungee jumper of mass 72.0 kg jumps from a cliff. After reaching his lowest point, he oscil- lates up and down. He is observed to reach his lowest point 9 times more in 45.0 s. Assume the bungee cord obeys Hooke's law. (a) What is the period of his motion? (b) What is the force constant of the bungee cord? (c) After oscillating for a while, the jumper finally comes to rest 30.0 m below his starting...
A woman with a mass of 53 kg runs at a speed of 6 m/s and jumps into a giant 30 kg skateboard initially at rest. What is the combined speed for the woman and the skateboard?
A high diver of mass 63.0 kg Jumps off a board 10.0 m above the water. If her downward motion is stopped 1.80 s after she enters the water, what average upward force did the water exert on her?