A racing car has a mass of 1510 kg. The acceleration of gravity is 9.8 m/s2.
What is its kinetic energy if it has a speed
of 126 km/h?
Answer in units of J.

Niobium forms a substitutional solid solution with vanadium. compute the number of niobium atoms per cubic centimeter for a niobium-vanadium alloy that contains 24 wt% nb and 76 wt% v. the densities of pure niobium and vanadium are 8.57 and 6.10 g/cm3, respectively

What are similarities and differences between refraction, reflection, diffraction and absorption?

Abicycle slows down when the rider applies the brakes. what type of energy transformation is involved in this example? a. kinetic energy into heat energy b. heat energy into potential energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy