19. The horizontal loop at the bottom of the staircase has a radius of 0.71 m. What is the centripetal force that the track exerts on the car when it is in the loop? (Hint: use the velocity value that you
found in question 18)

Shelly experiences a backward jolt when the driver starts the school bus. which of the following explains this phenomenon? a. the inertia of shelly b. the inertia of the bus c. the normal force of the seats on shelly d. the net force acting on shelly in a backward direction e. a zero net force acting on shelly

Does anyone have the answers to online physics course plato course physics, semester a v3.0

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?