The kinetic energy is one half the mass times the velocity squared
KE = 1/2 mv^2
First you cannot mix English and metric units, so you need to convert miles per hour to meters per second and your answer will be in kg m^2/sec^2 or joules
80 mph = 35.76 meters per second
KE = 1/2 (80) x (35.76)^2 = 51,151 joules
KE = 1/2 mass *velocity squared A direct relationship. More mass, and a truck has more mass, and the more kinetic energy if velocities are held equal.
Kinetic Energy is defined as the energy associated with motion. This is in contrast to potential energy which is associated with an entity's energy at rest, and it's potential for motion. Kinetic Energy can be calculated using this formula: KE = 0.5*Mass*Velocity^2, where KE = Kinetic Energy It is apparent by the formula that the same car traveling at a higher speed will have a greater kinetic energy than it does when traveling at a lower speed. Therefore, when the car travels at 50 mi/hr it has a higher kinetic energy than when it travels at 35 mi/hr. Let me just note that if we were talking about two different cars then we'd have to consider the weights of the cars.
Kinetic energy = (1/2) (mass) (speed)2KE = (1/2) (2,000) [ (50 km/hr) x (1,000 m/km) / (3,600 sec/hr) ]2= (1,000) (192.9) = 192,901.2 joules (rounded)
The difference is the mass of the moving object: ocean liner some 10.000 to: yacht some 10 to Theory: W kin = kinetic energy m = mass v = velocity W kin = 1/2 * m * v² So the yacht would have to travel approx. 316 times faster than the ocean liner (when at 10 knots per hour) to have the same kinetic energy.
If it is not moving, then forever.
The answer will depend on the rate. 20 miles per day? per hour?
Zero. You need to think in terms of "frame of reference" as in what are you comparing the rock to. If you are an observer sitting next to the rock then the kinetic energy of the rock RELATIVE TO YOU is zero - I.E. the rock isn't moving relative to you and thus has no kinetic energy - energy of motion - relative to you. If you are an observer sitting a million miles from earth watching the rock then it is zipping around at 1000 miles per hour as the earth spins on its axis and it has significant kinetic energy RELATIVE TO YOU. You need to think in terms of "frame of reference" as in what are you comparing the rock to. If you are an observer sitting next to the rock then the kinetic energy of the rock RELATIVE TO YOU is zero - i.e. the rock isn't moving relative to you and thus has no kinetic energy - energy of motion - relative to you. If you are an observer sitting a million miles from earth watching the rock then it is zipping around at 1000 miles per hour as the earth spins on its axis and it has significant kinetic energy RELATIVE TO YOU. ---- So we don't get bored, no kinetic and no gravitational potential energy.
368
a car going 60 miles per hour
WOW, 5 MILES PER SECOND. I guess that I would have to calculate the miles per hour. To do this, we must multiply 5 miles per second times 3600(the number of seconds in an hour). That is 18000 miles per hour. I like to work in the SI system, so by converting this to meters per second, we get 8.04672E3 meters per second. Kinetic energy is defined as one half mvsquared. The Kinetic Energy is equal to 3.2374E10 Joules.
a car going 60 miles per hour
KE = 1/2 mass *velocity squared A direct relationship. More mass, and a truck has more mass, and the more kinetic energy if velocities are held equal.
23.5 grams = 0.0235 kilograms 81.9 km per hour = 22.75 metres per sec. So kinetic energy = 1/2*Mass*Velocity2 = 6.081 Newtons
Kinetic Energy is defined as the energy associated with motion. This is in contrast to potential energy which is associated with an entity's energy at rest, and it's potential for motion. Kinetic Energy can be calculated using this formula: KE = 0.5*Mass*Velocity^2, where KE = Kinetic Energy It is apparent by the formula that the same car traveling at a higher speed will have a greater kinetic energy than it does when traveling at a lower speed. Therefore, when the car travels at 50 mi/hr it has a higher kinetic energy than when it travels at 35 mi/hr. Let me just note that if we were talking about two different cars then we'd have to consider the weights of the cars.
The more an objects kinetic energy increases the more it's temperature increases. An object that is traveling at 30 miles per hour will have a higher temperature than an object traveling at 10 miles per hour. This is in part due to friction. Mostly however, it is due to the fact that kinetic energy excites atoms in the object raising the objects temperature. You could put it like this: temperature = energy + atoms. Hope this helps.
It is 53.8 Joules, approx.
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