Your 60kg friend is bungee jumping from a bridge 55 m high. She falls a distance...
Your 60kg friend is bungee jumping from a bridge 55 m high. She falls a distance of 25 m before her bungee starts to stretch. If the bungee brings her to a stop when she is just about to hit the ground (has fallen a distance of 55 m), what is the elastic potential energy stored in the bungee? (in kJ)
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Your 60kg friend is bungee jumping from a bridge 55 m high. She
falls a distance...
Your 60 kg friend is bungee jumping from a bridge which is 60 m high. She...
Your 60 kg friend is bungee jumping from a bridge which is 60 m high. She falls a distance of 25 m before her bungee starts to stretch. -If she starts from rest at the top of the bridge, what is her change in kinetic energy (in kJ) right before her bungee begins to stretch? -If the bungee brings her to a stop when she is just about to to hit the ground (has fallen a distance 60 m), what...
Your 60kg friend is bungee jumping from a bridge which is 55 m high. She falls...
Your 60kg friend is bungee jumping from a bridge which is 55 m high. She falls a distance of 25 m before her bungee starts to stretch. What is her change in gravitational potential energy? (in kJ) Ignore air resistance
4./Your adventurous friend Lola goes bungee jumping. She leaps from a bridge that is 100 m...
4./Your adventurous friend Lola goes bungee jumping. She leaps from a bridge that is 100 m above a river. Her bungee cord has an un-stretched length of 50 m and a spring constant k - 600 N/m. Lola has a mass of 48 kg. How fast is she falling when she just starts to stretch the cord? How long does it take for Lola to reach this point? a) Lola stretches the bungee cord and it brings her to a...
When bungee jumping from a high bridge over Victoria Falls, an operator first attaches an elastic...
When bungee jumping from a high bridge over Victoria Falls, an operator first attaches an elastic rope to the jumper. The jumper then jumps off the bridge, falling freely until they reach the unstretched length of the rope Then, the rope begins to stretch and slows the jumper to a stop. The rope pulls the jumper back up, and they oscillate up and down for a while until the operator pulls the jumper back up to the bridge. The rope...
Consider a bungee jumper dropping vertically in freefall from a bridge 80 m above the ground....
Consider a bungee jumper dropping vertically in freefall from a bridge 80 m above the ground. After three seconds, the elastic cord connecting the jumper to the bridge starts to stretch, which changes the jumper's acceleration to 15 m/s2 upwards. a) Sketch (without doing any math) the position vs time, velocity vs. time, and acceleration vs. time graphs for the bungee jumper from the moment they start to fall to the moment they reach the closest to the ground. b)...
please label and circle the answers GREEN When bungee jumping from a high bridge over Victoria...
please label and circle the answers
GREEN When bungee jumping from a high bridge over Victoria Falls, an operator first attaches an elastic rope to the jumper. The jumper then jumps off the bridge, falling freely until they reach the unstretched length of the rope. Then, the rope begins to stretch and slows the jumper to a stop. The rope pulls the jumper back up and they osollte up and down for a while until the operator pulls the jumper...
Design a "bungee jump" apparatus for adults. A bungee jumper falls from a high platform with...
Design a "bungee jump" apparatus for adults. A bungee jumper falls from a high platform with two elastic cords tied to the ankles. The jumper falls freely for a while, with the cords slack. Then the jumper falls an additional distance with the cords increasingly tense. Assume that you have cords that are 9 m long, and that the cords stretch in the jump an additional 25 m for a jumper whose mass is 80 kg, the heaviest adult you...
1. Using the symbols in the problem described above, write an expression for the total mechanical...
1. Using the symbols in the problem
described above, write an expression for the total mechanical
energy of the jumper-rope-Earth system when the jumper is standing
at rest on the bridge.
2. What is the height of the jumper above the river when they've
fallen the full length of the unstretched rope?
3. Write an expression for the total mechanical energy of the
jumper-rope-Earth system when they've fallen the full length of the
unstretched rope. Your expression should include the...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses 2.20...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses
2.20 gallons of gasoline. Only 30% of the gasoline goes into useful
work by the force that keeps the car moving at constant speed
despite friction. (The energy content of gasoline is 1.3 ✕
108 J per gallon.)
(a) What is the force exerted to keep the car moving at constant
speed?
N
(b) If the required force is directly proportional to speed, how
many...
Linear Momentum of an object is conserved At all times b. Only when the net external...
Linear Momentum of an object is conserved At all times b. Only when the net external force on the object is Zero When the net external torque on the object is Zero d. Never A truck of mass 4000 (kg) is moving at 10 (m/s). A car of mass 1000 (kg) is moving at 40 (m/s). So, the truck’s momentum, compared to the car, is Greater b. Smaller c. the same d. Cannot say without knowing their accelerations A 1000...
4./Your adventurous friend Lola goes bungee jumping. She leaps from a bridge that is 100 m above a river. Her bungee cord has an un-stretched length of 50 m and a spring constant k - 600 N/m. Lola has a mass of 48 kg. How fast is she falling when she just starts to stretch the cord? How long does it take for Lola to reach this point? a) Lola stretches the bungee cord and it brings her to a...
When bungee jumping from a high bridge over Victoria Falls, an operator first attaches an elastic rope to the jumper. The jumper then jumps off the bridge, falling freely until they reach the unstretched length of the rope Then, the rope begins to stretch and slows the jumper to a stop. The rope pulls the jumper back up, and they oscillate up and down for a while until the operator pulls the jumper back up to the bridge. The rope...
please label and circle the answers
GREEN When bungee jumping from a high bridge over Victoria Falls, an operator first attaches an elastic rope to the jumper. The jumper then jumps off the bridge, falling freely until they reach the unstretched length of the rope. Then, the rope begins to stretch and slows the jumper to a stop. The rope pulls the jumper back up and they osollte up and down for a while until the operator pulls the jumper...
1. Using the symbols in the problem
described above, write an expression for the total mechanical
energy of the jumper-rope-Earth system when the jumper is standing
at rest on the bridge.
2. What is the height of the jumper above the river when they've
fallen the full length of the unstretched rope?
3. Write an expression for the total mechanical energy of the
jumper-rope-Earth system when they've fallen the full length of the
unstretched rope. Your expression should include the...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses
2.20 gallons of gasoline. Only 30% of the gasoline goes into useful
work by the force that keeps the car moving at constant speed
despite friction. (The energy content of gasoline is 1.3 ✕
108 J per gallon.)
(a) What is the force exerted to keep the car moving at constant
speed?
N
(b) If the required force is directly proportional to speed, how
many...
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