a jet engine generate 160kn force as it propels a 20000kg plane down a run away if 140kn of friction opposes the motion of aplane how much time take for the plane to reach a speed 33m/s from rest ?​

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

As a pendulum bob swings back and forth several times, the maximum height it reaches becomes less and less. this is because more and more of the pendulum bob's energy is being transformed into a. heat energy b. kinetic energy c. potential energy d. kinetic energy and potential energy

What is a view of science and psychology that says the value of knowledge depends on its usefulness? a. pragmatism b. psychotherapy c. physiology