A ball of mass 8 kg is thrown up with a speed of 10 m/s. Find the kinetic energy of the ball at the time of throwing.
Question
A ball of mass 8 kg is thrown up with a speed of 10 m/s. Find the kinetic energy of the ball at the time of throwing.
Solution
The kinetic energy (KE) of an object can be calculated using the formula:
KE = 1/2 * m * v^2
where: m = mass of the object v = velocity of the object
Given: m = 8 kg v = 10 m/s
Substituting the given values into the formula, we get:
KE = 1/2 * 8 kg * (10 m/s)^2 KE = 1/2 * 8 kg * 100 m^2/s^2 KE = 4 kg * 100 m^2/s^2 KE = 400 Joules
So, the kinetic energy of the ball at the time of throwing is 400 Joules.
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