What is the kinetic energy possessed by an object having mass 25 kg and moving with a uniform velocity of 2 m s⁻¹?
50 J
The kinetic energy (KE) of an object is given by the formula:
\( KE = \frac{1}{2}mv^2 \)
where:
- \(m\) is the mass of the object (in kg)
- \(v\) is the velocity of the object (in m/s)
In this problem, we are given:
- \(m = 25 \, kg\)
- \(v = 2 \, m/s\)
Substituting these values into the formula, we get:
\( KE = \frac{1}{2} \times 25 \, kg \times (2 \, m/s)^2 \)
\( KE = \frac{1}{2} \times 25 \, kg \times 4 \, m^2/s^2 \)
\( KE = 25 \times 2 \, kg \cdot m^2/s^2 \)
\( KE = 50 \, J \)
Therefore, the kinetic energy possessed by the object is 50 Joules (J).
Similar Questions
A ball of 200 g is thrown vertically upward with a speed of 20 m/s. The momentum of the ball at the highest point of its path is (take g = 10 m/s 2):
1 kWh = _________.
An object with a mass of 22 kg moving with a velocity of 5 m/s possesses kinetic energy of:
A body of mass 2 kg is thrown upward with an initial velocity of 20 m/s. After 2 seconds, its kinetic energy will be: (g = 10 m/s 2)
What will be the value of the kinetic energy (EK) of a moving body with mass m, if its speed is doubled from v to 2v?
The kinetic energy of a ball weighing 0.5 kg moving with a velocity of 4 m/s will be:
If 90 J of work is done in moving a charge of 2,000 coulombs across V volts, find V.
What does the kinetic energy of an object increase with?
A ball is dropped from a height of 10 m. It strikes the ground and rebounds up to a height of 2.5 m. During the collision, the per cent loss in the kinetic energy is:
Complete the following sentence with the most appropriate option.
Wind energy is considered ________ efficient than solar energy.
Important Questions from Work Power Energy
The energy possessed by a body due to its change in position or shape is called
Wind turbines convert ________ energy into mechanical power.
What is represented by the product of force with displacement in the direction of force?
The rate of doing work is called:
What powers the Earth's internal heat engine?
