Answer: 6 J
Step-by-step explanation:
The formula for calculating kinetic energy is expressed as
kinetic energy = 1/2mv^2
where
m is the mass of the object
v is the velocity
From the information given,
m = 0.75
v = 4
kinetic energy = 1/2 x 0.75 x 4^2
kinetic energy = 6 J