2. R(z) = = -5/3 – 4z³/ - N Hint: Simplify.

The kinetic energy E of an object varies jointly with the object’s mass m and the square of the object’s velocity v . An object with a mass of 50 kilograms traveling at 16 meters per second has a kinetic energy of 6400 joules. What is the kinetic energy of an object with a mass of 70 kilograms traveling at 20 meters per second?

Simplify V(5/2)=(4/3)(pi)(r)^3 and V(4r)=(4/3)(pi)(r)^3

(I'o67 =7 %3D 2. of