Kinetic Energy Calculation for Moving Object
To find the kinetic energy (KE) of an object, we use the following information:
- Mass (\(m\)) = 1 kg
- Velocity (\(v\)) = 10 m/s
Physics Formula for Kinetic Energy
The formula to calculate kinetic energy is:
\( KE = \frac{1}{2}mv^2 \)
Step-by-Step Calculation
Substitute the given values into the kinetic energy formula:
- Plug in the mass and velocity:
\( KE = \frac{1}{2} \times (1 \, \text{kg}) \times (10 \, \text{m/s})^2 \)
- Calculate the square of the velocity:
\( (10 \, \text{m/s})^2 = 100 \, \text{m}^2/\text{s}^2 \)
- Complete the multiplication:
\( KE = \frac{1}{2} \times 1 \, \text{kg} \times 100 \, \text{m}^2/\text{s}^2 \)
\( KE = 0.5 \times 100 \, \text{kg} \cdot \text{m}^2/\text{s}^2 \)
- Determine the final kinetic energy:
\( KE = 50 \, \text{J} \)
(Note: 1 kg⋅m²/s² is equal to 1 Joule, J)
Result
The kinetic energy of the object is 50 J.
Similar Questions
- The work done by a 10 Newton force acting on a body, which results in the displacement of 2 m in the direction of the force, is __________.
- The efficiency of a machine can never be ______.
- In practice, the work output of a machine is ______ the work input due to the effect of friction.
- How much energy is used by an 80% efficient, 2kW motor running at a peak load for 5 hours?
- A pump is required to lift 600 kg of water per minute from a well 25m deep and to eject it with a speed of 50 m/s. If \(g = 10 \text{ m/s}^2\), the power required to perform the above task is
- A lorry and a car moving with the same kinetic energy are brought to rest by applying the same retarding force. Then:
- In practice, the work output of a machine is always less than the work input due to the effect of ______.
- Ideal machines are those imaginary machines which are ______.
- The efficiency of a simple machine is defined as ______.
- An object of mass m follows a circular path of radius r with a constant speed v in uniform circular motion. Then, the work done by the centripetal force for the object to move once in a full circle is
Important Questions from Work Power and Energy
Which of the following is an example of potential energy?
_______ is one of the chemical used to produce Ocean Thermal Energy.
A body of mass 2kg is thrown up vertically with a kinetic energy of 500J. If the acceleration due to gravity is 10 m/s2, the height at which the kinetic energy of the body becomes half of the original values is _____
Arjun has a mass of 50 kg, he eats banana of 1000 calories. If this energy is used up to lift him from the ground, the height to which he can climb is _______. Take g = 10 m/s2 and 1 calories = 4.2 Joule.
When a body of mass 'm' attains a velocity 'v' from rest in time 't', then kinetic energy of translation is:
