The energy contained in moving objects is referred to as kinetic energy. No kinetic energy exists in stationary particles.

Formula: KE = \frac{1}{2}mv^2   

If either of the two numerics are given, the kinetic energy formula is used to calculate the mass, velocity, or kinetic energy of the body.

Step 1: Finding the speed of the object

Given that

Kinetic energy [math] KE = 88 [/math[ joules

Mass of the object m = 45 kg

KE = \frac{1}{2}mv^2   

v^2 = \frac{2KE}{m}

v = \sqrt{\frac{2KE}{m}}   

Inserting the given values in the above equation

v = \sqrt{\frac{2*88}{45}}   

v = \sqrt{3.9}

v = 1.977

Hence, speed of the object v = 1.977 m/s