125 J
The kinetic energy (KE) of a body is given by the formula:
\(KE = \frac{1}{2}mv^2\)
where:
- \(m\) is the mass of the body (in kg)
- \(v\) is the velocity of the body (in m/s)
In this problem, we are given:
- \(m = 10 \, kg\)
- \(v = 5 \, m/s\)
Substituting these values into the formula, we get:
\(KE = \frac{1}{2}(10 \, kg)(5 \, m/s)^2\)
\(KE = \frac{1}{2}(10 \, kg)(25 \, m^2/s^2)\)
\(KE = 5 \, kg \times 25 \, m^2/s^2\)
\(KE = 125 \, kg \cdot m^2/s^2\)
Since 1 Joule (J) is equal to 1 kg⋅m²/s², the kinetic energy is:
\(KE = 125 \, J\)
Therefore, the kinetic energy of the body is 125 J.
Similar Questions
- If both mass and speed of a ball are doubled, the kinetic energy becomes ______ times.
- A car of mass 800 Kg is moving on an expressway. In order to increase the speed of the car from 54km/hr to 90km/hr the work required to be done will be
- An object of mass 1 kg is moving with a velocity 10 m/s. Find the kinetic energy of the object.
The energy possessed by an object by virtue of its motion is known as ________.
How fast should a cat of mass 15 kg run in order to have a kinetic energy of 120 J?
Which of the following represents an item with kinetic energy?
Important Questions from Kinetic Energy
An object of mass 10 kg is moving with a uniform velocity of 2 m/s. What will be the kinetic energy of the object?
In an experiment, the velocity of a non-relativistic neutron is determined by measuring the time (~50 ns) it takes to travel from the source to the detector kept at a distance L. Assume that the error in the measurement of L is negligibly small. If we want to estimate the kinetic energy T of the neutron to within 5% accuracy, i.e., IδT / T I ≤ 0.05, the maximum permissible error Iδt Iin measuring the time of flight is nearest to
The kinetic energy of the particles of ______ is maximum.
Two metallic blocks having masses in the ratio 2 : 3 are made to slide down a friction less inclined plane starting initially from rest position. When these blocks reach the bottom of the inclined plane, they will have their kinetic energies in the ratio
- A swimmer can achieve a speed of $4$ km/h in still water. If the river current flows at $2$ km/h, and the swimmer aims to cross the river landing directly opposite their starting point, what is the magnitude of the swimmer's effective velocity perpendicular to the river flow?
