Question

A 60.0-kg woman who runs up a 3.00 m high flight of stairs in 3.50 s,...

A 60.0-kg woman who runs up a 3.00 m high flight of stairs in 3.50 s, starting from rest but having a final speed of 2.00 m/s? What is the final kinetic energy. A) 1764 J B) 1658 J C) 1843 W D) 1546 J E) 540 J

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A 40.0 kg child runs with a speed of 2.90 m/s tangential to the rim of...
A 40.0 kg child runs with a speed of 2.90 m/s tangential to the rim of a stationary merry-go-round(Figure 1). The merry-go-round has a moment of inertia of 580 kg?m2and a radius of 2.51 m . When the child jumps onto the merry-go-round, the entire system begins to rotate. A) Calculate the initial kinetic energy of the system. (J) B)Calculate the final kinetic energy of the system. (J)
A railroad car of mass 3.00 ? 104 kg moving at 3.00 m/s collides and couples...
A railroad car of mass 3.00 ? 104 kg moving at 3.00 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s. (a) What is the speed of the three coupled cars after the collision? _______ m/s (b) How much kinetic energy is lost in the collision? _______ J
A railroad car of mass 2.70 ✕ 104 kg moving at 3.50 m/s collides and couples...
A railroad car of mass 2.70 ✕ 104 kg moving at 3.50 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s. (a) What is the speed of the three coupled cars after the collision? m/s (b) How much kinetic energy is lost in the collision? J
A 65.0-kg woman stands at the rim of a horizontal turntable having a moment of inertia...
A 65.0-kg woman stands at the rim of a horizontal turntable having a moment of inertia of 460 kg · m2 and a radius of 2.00 m. The turntable is initially at rest and is free to rotate about a frictionless vertical axle through its center. The woman then starts walking around the rim clockwise (as viewed from above the system) at a constant speed of 1.50 m/s relative to the Earth. (a) In what direction does the turntable rotate?...
1) If a person holds 50 kg object at a height of 2 m above the...
1) If a person holds 50 kg object at a height of 2 m above the floor for 10 s. How much work is done? W = F×d (2) The work done in lifting 30kg of bricks to a height of 20m is W = m ×g × d (Formula, W = F × d but Force = m × g) (3) A total of 4900 J is used to lift a 50-kg mass. The mass is raised to a...
1-11)A 48-kg woman cheats on her diet and eats a 670-Calorie (670 kcal) jelly doughnut for...
1-11)A 48-kg woman cheats on her diet and eats a 670-Calorie (670 kcal) jelly doughnut for breakfast. (a) How many joules of energy are the equivalent of one jelly doughnut? J (b) How many stairs must the woman climb to perform an amount of mechanical work equivalent to the food energy in one jelly doughnut? Assume the height of a single stair is 15 cm. stairs (c) If the human body is only 23% efficient in converting chemical energy to...
Two manned satellites approaching one another at a relative speed of 0.300 m/s intend to dock....
Two manned satellites approaching one another at a relative speed of 0.300 m/s intend to dock. The first has a mass of 3.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. Assume that the positive direction is directed from the second satellite towards the first satellite. (a) Calculate the final velocity after docking, in the frame of reference in which the first satellite was originally at rest. m/s (b) What is the loss of kinetic...
boy has a mass of 55.0kg, is skiing 3.50 m/s west when he runs head on...
boy has a mass of 55.0kg, is skiing 3.50 m/s west when he runs head on into a girl, mass = 45.0 kg, going east at 2.50 m/s.  To decrease the impact he grabs the girl so they are stuck together. (using calc physics) What is the total momentum (magnitude and direction) just before the collision? What is the total momentum (magnitude and direction) right after the collision? What is the final velocity of the goofy and the girl? How much...
Two manned satellites approaching one another at a relative speed of 0.450 m/s intend to dock....
Two manned satellites approaching one another at a relative speed of 0.450 m/s intend to dock. The first has a mass of 3.00 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. Assume that the positive direction is directed from the second satellite towards the first satellite. (a) Calculate the final velocity after docking, in the frame of reference in which the first satellite was originally at rest. m/s (b) What is the loss of kinetic...
A 6.20 kg block is pushed 9.50 m up a smooth 36.0 ∘inclined plane by a...
A 6.20 kg block is pushed 9.50 m up a smooth 36.0 ∘inclined plane by a horizontal force of 70.0 N . If the initial speed of the block is 3.50 m/s up the plane. Calculate the initial kinetic energy of the block. Calculate the work done by the 70.0 N force. Calculate the work done by gravity. Calculate the work done by the normal force. Calculate the final kinetic energy of the block. Please explain