While running, a person dissipates about 0.600 J of chemical energy to mechanical energy per step per kilogram of body mass. If a 75.0 kg runner dissipates energy at a rate of 83.0 W during a race, how fast is the person running? Assume a running step is 1.50 m long.

Q: A 1.47 N baseball is dropped from a height of 10.0 meters and falls through the air to the ground.…

A: The total mechanical energy of a system remains constant if the internal forces are conservative and…

Q: An athlete stretches a spring an extra 40.0 cm beyond its initial length. How much energy has he…

A: This question is from the spring potential energy. Given  Length to which spring is streched by…

Q: What is the total mechanical energy of a 500 gram object as you release it from 1.5 meters above the…

A: Given that mass m=0.5Kg  Height h=1.5m Total mechanical energy(E)=Kinetic energy+ potential energy…

Q: In a bicycle race, a rider such as Lance Armstrong (mass = 70 kg) uses energy at a rate of 6.0 W/kg…

A:

Q: 09: A person trying to lose weight by burning fat lifts a mass of 10 kg up to a height of 1 m 1000…

A: Given : Lifting mass = 10 kg Height = 1m Number of times = 1000 Energy supplied by fat per kg…

Q: A 7.00 - kg bowling ball moves at 3.00 m/s. How fast must a2.45 - g Ping - Pong ball move so that…

A: According to law of conservation of energy.

Q: 9. The 1.25 kg box, starting from rest, slides down the ramp and into the spring (k=10 N/m)…

A:

Q: What is the energy ?E required to accelerate a 1645 kg1645 kg car from rest to 27 m/s? Compared to…

A: From work energy theorem, the net work done is equal to change in kinetic energy .Write the…

Q: Q. a) whatis the energy required to walk 20km at 5 km/h ? From the table. the energy rate of walking…

A: SOlution: given that distance  = 20 km speed =  5 km/h

Q: An 68.0-kg man eats a banana of energy content 436 kJ (104 kcal). If all of the energy from the…

A:

Q: Avery Kratzer has been asked to find the kinetic energy of a short ton of water moving at 60…

A: From the question, it is given that- Mass of short ton of water: m = 2000 lb = 907.185 kg Speed of…

Q: What is the kinetic energy of a 48 gram bullet traveling at 200.0 m/s? KE = x 102 J

A:

Q: How fast must a 2.5-g ping-pong ball move in order to have the same kinetic energy as a 145 g…

A:

Q: of U; = 50 J. Assuming there are no other outside forces acting on the object, how Suppose an object…

A:

Q: A block of mass ? = 200 g is released from rest from the top of a frictionless ramp. As the block…

A: Given : Mass of the object, m = 200 g Acceleration due to gravity, g = 9.8 m/s2 Height at which mass…

Q: A bullet of mass 0.010 kg and speed of 100 m/s is brought to rest in a wooden block after…

A: The change in energy comes from a force that causes an object to move a certain distance regardless…

Q: Two railroad cars, each of mass 5094kg and traveling 82.8km/h in opposite directions, collide…

A: Given speed of both car v= 82.8 km/h =23 m/s Mass of each car M= 5094 kg According to law of energy…

Q: A block sliding along a horizontal frictionless surface with speed v collides with a spring and…

A: Write the expression for conservation of energy

Q: *The 3,000lb race car is up and running again and slides into a wall at 150mph. What is the kinetic…

A: A body is said to be possessing kinetic energy if it has a velocity. The higher the velocity of the…

Q: How fast must a 2.5-g ping-pong ball move in order to have the same kinetic energy as a 145 g…

A: Given  Mass of ping pong m1=2.5g Mass of base ball m2=145g Speed of baseball v2=37m/s     Let speed…

Q: 7.19 kg bowling ball moves at 3 m/s. How fast must a 2.25 g Ping-Pong ball move so that the two…

A:

Q: What are some reasons the total energy of an object might change while traveling through space?

A: To find Reason for the total energy change for an object while traveling through space.

Q: At room temperature, an oxygen molecule, with mass of 5.31 x 10^-26 kg, typically has a kinetic…

A:

Q: In the winter activity of tubing, riders slide down snow covered slopes while sitting on large…

A: The change in gravitational potential energy is,Substitute the values,

Q: An 83kg man eats a banana of energy content 1.00x10^3 kcal. If all of the energy from the banana is…

A: Given data:  Mass (m) = 83 kg Energy (E) = 1.00 × 103 kcal Initial velocity (v0) = 0 m/s Required:…

Q: The engine of a car of mass 1450kg can deliver average power of 5.2 x 104 W.Time taken by the car to…

A: Given values -  Mass=m=1450 kgPower=P=5.2×104 WFinal velocity=Vf=32 ms

Q: What is the wattage of a light bulb that uses 35 J of energy in 7 s?

A: given,  Energy = 35 J  time = 7 s  Therefore, the wattage of the light bulb               =…

Q: How long must a 350 W engine run in order to produce 360 kJ of work? O 681 s O 804 s ) 1030 s O 1440…

A: Given : Power of engine P=350 W Work to be produced  W=360 KJ=360×103J

Q: A 69.7-kg boy is surfing and catches a wave which gives him an initial speed of 1.60 m/s. He then…

A: We have givenMass of boy = 69.7 kg Initial speed (u)= 1.60 m/s  Droping  height (h)= 1.64 mFinal…

Q: A 40.0-kg box initially at rest is pushed 5.00 m along a rough, horizontal floor with a constant…

A: Note: As per the guidelines, we can only answer three subparts of a question. Sorry for the…

Q: An arrow of mass 0.002 kg is shot from a bow. If the string is stretched a distance 0.45 m using a…

A: Energy stored in the bow is elastic potential energy (U) Given, Stretched distance, x = 0.45 m…

Q: A 45 kg softball player slides into second base, generating 350 J of thermal energy in her legs and…

A:

Q: How fast must a 2.5-g ping-pong ball move in order to have the same kinetic energy as a 145 g…

A: Kinetic energy is possessed by the object which is in the moving state. This can be defined as the…

Q: Which ane of the followings is NOT part of the total energy of a system? O Kinetic energy. O…

A: Total energy of system is the combination of kinetic energy , potential energy and internal energy…

Q: How fast must a 2.7-g ping-pong ball move in order to have the same kinetic energy as a 145 baseball…

A: Given data: Mass of ball 1, m1=145 g=0.145 kg Velocity of ball 1, v1=39 m/s Mass of ball 2,…

Q: A bicyclist on a flat road expends energy at a rate of 80 W. How many Joules of energy are expended…

A:

Q: A 40.0-kg box initially at rest is pushed 5.00 m along a rough, horizontal floor with a constant…

A:

Q: A 2 kg object moves with a velocity of 4 m/s for a time of 10 seconds. How much KE does the object…

A: Given data:  Mass (m) = 2 kg Velocity (v) = 4 m/s Required: Kinetic Energy

Q: A stone is dropped in air from a height of 50 meters above the ground. As the stone falls, what…

A: Kinetic energy is the energy associated with the movement of objects. Although there are many forms…

Q: How fast must a 2.5-g ping-pong ball move in order to have the same kinetic energy as a 145 g…

A: Kinetic energy is given by K.E =MV2/2 Here, K.E = kinetic Energy of the body M = mass of the body V…

Q: A 66-kg boy is surfing and catches a wave which gives him an initial speed of 1.6 m/s. He then drops…

A: given mass m =66kg initial speed vi=1.6 m/s final speed vf =8.5 m/s height =1.56 m

Q: What is the kinetic energy of a 146.7 g baseball thrown at 49.8 m/s at a height of 114 m? Use g=9.8

A: Mass = m = 146.7 g = 146.7 × 10-3 kg Initial speed =v0 = 49.8 m/s Height = h = 114 m K.E. at h =?