Which of the following is a correct unit of energy? O kg m/s^2 O kg m^2/s O kg m^2/s^2 kg^2 m/s^2
Q: In a bicycle race, a rider such as Lance Armstrong (mass = 70 kg) uses energy at a rate of 6.0 W/kg…
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Q: An astronaut in a spacesuit on a spacewalk is a completely sealed system, with no matter lost or…
A: Given: Power = 250 W
Q: A baseball of mass 0.4 kg is thrown at a speed of 39.2 mi/h. What is its kinetic energy?
A: Given data: Mass (m) = 0.4 kg Speed (v) = 39.2 mi/h Required: Kinetic energy (KE)
Q: You are planning a deep space exploration and want to take your cat with you. If your spacecraft…
A: cat weighs 8.5 lbf= 37.8099 N velocity of the spacecraft, v=87100×c=0.87 c The rest mass,…
Q: If an object with a mass of 1.8 kg changes it speed from 4.07 m/s to 9.05 m/s, what is its change in…
A: Kinetics energy is given as K.E=12mv2…
Q: Answer both or none
A: In part 1, the surface is rough and there is increase in speed while going downNow in the second…
Q: At a construction site, there is a pile of sand in the shape of a cone. The cone has a height of 5 m…
A: Height of the cone Base radius of the cone Density of the sand Gravitational Acceleration
Q: An object with a mass of 2.29 kg is initially moving at a rate of 4.88 m/s. A net work of 34.8 J is…
A: The work done by the sum of all forces acting on a particle equals the change in the kinetic energy…
Q: The mass of a bald eagle is 6.3 kg. If the eagle is flying at a speed of 33.5 meters/seconds, what…
A: The relation of the kinetic energy is given in terms of mass and velocity Ek=12mv2
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: 2. Ryan having mass 60 kg possesses a kinetic energy of 1.3 kJ. What is his speed?
A: Disclaimer - You have asked multiple questions, so as per our guidelines we will answer the first…
Q: Data Table n 2 3 4 5 6 7 8 μ= 0.00031 M (g) fexp= 260 2 240 S 5 9 50 9 35 kg/m L= 105 65 2m = 58.4…
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Q: Tinkerbell has a velocity of 5 m/s [S] and a kinetic energy of 22.5 J, what is her mass? O 2.25 kg…
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Q: Lo= 0.09 m , g = 10 m/s? x = L – Lo (m) Fg (N) 0.2 m (kg) L (m) 0.02 0.108 0.018 0.04 0.126 0.036…
A: The graph is as shown below:
Q: A bird (m=250g) is flying through the sky at 10m/s, if the birds total energy is 1000J, what is his…
A: Given data: Mass (m) = 250 g = 0.250 kg Velocity (v) = 10 m/s Total Energy (TE) = 1000 J Required:…
Q: A baseball weighs 1.3 N and has a speed of 26 m/s just before the catcher catches it. What is the…
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Q: A ball with a momentum of 4.0 kg•m/s hits a wall and bounces straight back without losing any…
A: we know the formula for momentum is given by p = m.v where p = momentum m= mass v = velocity .…
Q: How fast (in meters per second) must an iron ball with a mass of 51.2 g be traveling in order to…
A: Given: The mass of the object is 51.2 g. The kinetic energy of the object is 16.15 J.
Q: If an object with a mass of 2 kg changes it speed from 3.12 m/s to 7.96 m/s, what is its change in…
A: Given data: Mass of the object: Initial speed: Final speed: Concept: The change in kinetic energy…
Q: A 7.03 kg bowling ball moves at 2.85 m/s. How fast must a 2.26 g Ping-Pong ball move so that the two…
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Q: One model for the potential energy of a two-atom molecule, where the atoms are separated by a…
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Q: A baseball of mass 0.26 kg is thrown at a speed of 41.5 mi/h. What is its kinetic energy?
A: mass of baseball (m) = 0.26 kg speed (v) = 41.5 mihr
Q: The energy required to increase the speed of a certain car from 18 m/s to 23 m/s is 185 kJ. What is…
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Q: 7 kg school kid is hurrying to catch the school bus. He runs at 3.1 m/s. How many es of kinetic…
A: Given:- The mass of the kid m = 47kg The speed of the kid v = 3.1 m/s Find :- The kinetic energy…
Q: A hockey puck with a mass of 0.159 kg slides over the ice. The puck initially slides with a speed of…
A: mass of hockey puck (m) = 0.159 kg initial velocity (u) = 6.15 msfinal velocity (v) = 3.15 ms
Q: A typical baseball has a mass of 0.145 kg. Some pitchers can throw a baseball with a speed of about…
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Q: An atomic bomb moving at 100.0 m/s explodes releasing 2.70*10^17J of energy. How massive was the…
A: Given that, the velocity of the bomb is v=100m/s And the energy released after the explosion is…
Q: A 15-gram [g] rubber ball is released from a height of 8 meters [m] above a flat surface on the…
A: Given data: Mass (m) = 15 g = 0.015 kg Height (h) = 8 m, above the flat surface Acceleration due…
Q: An object with mass 99 kg is moving at the velocity of −3.6 m/s. What is its kinetic energy in the…
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Q: An object with a mass of m = 3.00 kg is traveling with an initial velocity of vi = (5.40î − 1.60ĵ)…
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Q: The kinetic energy of a moving object is KE = 1/2 mv2, where m is the mass and v is the speed. An…
A: Given data: Mass (m) = 0.22 kg Kinetic energy (KE) = 0.59 million joules Required: The speed of…
Q: The summit of a mountain is 5540 m above sea level. (a) How much energy would a 87 kg climber expend…
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Q: For a coin that is dropped at the top of the building, compare the potential energy at the bottom…
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Q: A75 gram bullet is shot out of a gun with a speed of 250 m/s. Find the kinetic energy of the bullet…
A: The kinetic energy of the bullet can be given by KE=12mv2
Q: An object is traveling at a final speed of 12 m/s. What was the initial speed of the object,…
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Q: Two different masses are sitting on a frictionless track with a compressed spring between them which…
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Q: Judy has started fast walking for half an hour each day in an effort to lose weight. Judy currently…
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- An object with a mass of 2.1 kg is initially moving at a rate of 5.73 m/s. A net work of 37.8 J is done, resulting in a change in the object's speed. What is its final speed?Large meteors sometimes strike the earth , converting most of their kinetic energy into thermal energy. what is the kinetic energy of a 10^9 kg meteor moving at 25.0 km/s?If a particle is moving, it has kinetic energy. Kinetic energy is the energy of motion, and it depends on the speed and mass of the particle. It is given by the formula Ek = 1/2*mv2, where Ek is the kinetic energy, m is the mass, and v is the speed of the particle. The formula for kinetic energy has some important features to keep in mind. Kinetic energy, and every other type of energy as well, is a scalar quantity, given by only a single number. Energy does not have a "direction", unlike a vector quantity. (This is in contrast to the vector quantity momentum, which you might have already studied.) Kinetic energy, in particular, is always a positive number. (Note the speed v is the magnitude of the vector velocity, and therefore is positive. But even if it were a negative number, squaring it would always lead to a positive result.) Kinetic energy depends on the square of the speed. (This is in contrast to the magnitude of momentum, mv, a quantity you may have already studied, which…
- A car with a mass of 1500 kg speeds up from 12 m/s to 13 m/s. For this process, calculate the associated change in kinetic energy, AKE, paying attention to units. (Note that 1 J = 1 kg m^2/s^2.) 1.5 kJ 18.75 kJ 37.5 kJ 19.5 kJ 14.7 kJ 0.75 kJThe rate of energy use in a typical house is about 2 kW. If the kinetic energy of a car (mass 1358 kg) is equal to the total energy used by the house in 1 min, what is the car's speed? m/sSuppose a toy truck with a mass of m = 1 kg is moving with a speed of v = 1 m/s. What is the magnitude (in kg · m/s) of its momentum, p? _______________ kg · m/s Now suppose a 2 kg toy truck is moving at 1 m/s. What is the magnitude (in kg · m/s) of its momentum? _________________ kg · m/s Finally, consider a 1 kg toy truck at 2 m/s. What is the magnitude (in kg · m/s) of its momentum? _____________ kg · m/s
- An object with a mass of 2.44 kg is initially moving at a rate of 5.54 m/s. A net work of 36.3 J is done, resulting in a change in the object's speed. What is its final speedThe kinetic energy of a 1000.01-kg car is 6.201 × 105 J. How fast is the car moving?How fast must a 2.5-g ping-pong ball move in order to have the same kinetic energy as a 145 g baseball moving at 33.0 m/s?
- 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.A +2 m/s mA = 4 kg 0 -2 m/s D +2 m/s mp = 8 kg 0 -2 m/s 2 s 2 4 s B +2 m/s mg = 4 kg 0 4 s -2 m/s E +2 m/s = 8 kg mg = 0 -2 m/s 2 s 2 s 4 s 4 s C +2 m/s mc=4 kg 0 -2 m/s F +2 m/s mp = 8 kg 0 -2 m/s 2 s Shown in the figure are six velocity vs. time graphs for six objects that move along a straight, horizontal and frictionless path. A single external force, such as a hand, acts on each object. The masses of each of the objects are given next to their respective graph of motion. For the four second interval shown, rank the total work done on the objects by the external force from greatest positive to the greatest negative for cases A-F. 4 sA 58-kg diver is standing on a platform that is 35 meters above the surface of the water. He steps off the platform with zero initial velocity and descends toward the water below. Assuming that no energy is lost to his surroundings, how much kinetic energy (in joules) does the diver have right before he hits the water?