The pilot of a new stealth helicopter, which has a mass of 15,000kg and was traveling at 180 m/s, accelerated to 250 m/s in 6 seconds to make sure he could rescue those in need. How much force was used to accelerate the helicopter and what was the helicopter’s final momentum?

Each neuron shown in this figure innervates a group of muscle fibers. what is the term for a group of muscle fibers innervated by a single neuron?

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.

According to the image below, which season is about to begin in the southern hemisphere? a. summer b. autumn c. winter d. spring