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An object of mass 10kg is moving with a velocity of 5m/s. What is its kinetic energy?
125 Joules
250 Joules
50 Joules
100 Joules
125 Joules
The kinetic energy of an object is the energy it possesses due to its motion. For an object of mass 10 kg moving with a velocity of 5 m/s, its kinetic energy evaluates to 125 Joules.
The kinetic energy of an object is the energy it possesses due to its motion. For an object of mass 10 kg moving with a velocity of 5 m/s, its kinetic energy evaluates to 125 Joules.
Catching a baseball traveling at 50 km/h stings much more than catching one at 25 km/h because kinetic energy increases with the square of the speed.
KE=21тАЛmv2 тАФ Formula for kinetic energy
Kinetic energy is determined by the mass of an object and the square of its velocity, as defined by the work-energy theorem. Because velocity is squared, changes in speed have a much greater impact on kinetic energy than changes in mass.
Kinetic energy is a scalar quantity.
The standard SI unit for kinetic energy is the Joule (J) or kgтЛЕm2/s2.
Calculating vehicle stopping distances in traffic safety
Designing hydroelectric power generation systems
1┬аJ=1┬аNтЛЕm
Option B (250 Joules) is a distractor obtained by omitting the 21тАЛ multiplier (10imes52=250).
A is correct тАФ The kinetic energy is calculated as 21тАЛimes10imes52=125┬аJoules.
Always verify whether the problem requires converting units (e.g., from km/h to m/s) before applying the kinetic energy formula.
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