Question

A body of mass 30g has a velocity of 3m/s.find it's kinetic energy.( Pls show your working)

Answer 1

Plz I need it urgently

Answer 2

Ke = (1/2) m v^2 = (1/2)(0.030) (9)

Answer 3

[AI-generated answer — Explain Bot]

To find the kinetic energy of a moving body, you can use the equation:

Kinetic Energy (KE) = (1/2) * mass * velocity^2

Given:
Mass (m) = 30g = 0.03 kg (since 1 kg = 1000 g)
Velocity (v) = 3 m/s

Now, substitute the values into the formula:

KE = (1/2) * 0.03 kg * (3 m/s)^2

First, square the velocity: (3 m/s)^2 = 9 m^2/s^2

Next, multiply by mass:

KE = (1/2) * 0.03 kg * 9 m^2/s^2

Now, multiply the two numbers:

KE = 0.135 kg m^2/s^2

The unit of kinetic energy is the Joule (J), which is equivalent to kg m^2/s^2. So, the final answer for the kinetic energy of the body is:

KE = 0.135 J