Question

calculate the ke of body mass 3500g moving in a speed 12m/s​

Answer 1

Given,

• Mass(m) = 3500 g = 3.5 kg
• Speed(s) = 12 m/s

Here, speed can be the same as velocity

So Speed = Velocity(v) = 12 m/s

Here, we have to find the kinetic energy (KE).

$\boxed{\bold{\sf{Kinetic \ Energy \ (KE) \ = \frac{1}{2}mv^2}}}$

Applying the values to the equation,

$\sf{\implies KE=\frac{1}{2}\times3.5\times12^2}$

$\sf{\implies KE=\frac{1}{2}\times3.5\times144}$

$\sf{\implies KE=3.5\times72}$

$\sf{\implies KE= 252\ J}$

$\boxed{\bold{\sf{\therefore\ Kinetic \ Energy \ (KE) \ = 252 \ J}}}$