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

Answer:

56J

Explanation:

Formula to calculate kinetic energy:

$K=(1/2)*m*v^{2}$  ,equation (1)

K: It's the kinetic energy in Joules (J)

m: body mass in kilograms (kg)

v: body speed in meters / second (m / s)

Known information:

m = 7kg

v = 4 m / s

We replace the known information in  the equation 1:

$K=( 1/2)*7*4^{2}$

$K=56 kg*m^{2} /s^{2} = 14 Newton*metro$

$K=56J$

Answer 2

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