Evaluate the indefinite integral. (Use C for the constant of integration x3. x2 + 37 dx

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?

Evaluate the integral. Check your result by differentiation.     3x4 dx (7x5 − 2)4

Disregard answers in the box, make sure to answer correctly and show each answer cohrently/clearly. Thanks.