Question

The bowling ball is whizzing down the bowling lane at 4 m/s. If the mass of the bowling ball is 7 kg, what is its kinetic energy?

Answer 1

Kinetic Energy = 1/2xmassx(velocity)^2
Input values;
K.E=1/2x7kgx(4m/s)^2
K.E.=56J

Answer 2

A bowling ball of 7 kg with 4m/s speed has the kinetic energy of 56 J.

Kinetic Energy:

The kinetic energy of the particle is due to its movement. It is given as the formula.

$\bold { KE = \dfrac 1{2} mv^2}$

Where,

m - mass of the object = 7 kg

V - velocity = 4 m/s

Put the values in the formula,

$\bold {K.E= \dfrac 1{2}\times 7kg \times (4m/s)^2}\\\\\bold {K.E.=56\ J}$

Therefore, kinetic energy of the given object is 56 J.

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