Q. A small remote-control car with a mass 1.60 kg moves at a constant speed of 12.0 m/s in a vertical circle that has a radius of 5.00 m. What is the magnitude of the normal force exerted on the car by at the bottom of the circle?
Q. The rms speed of the molecules in 1.0 of hydrogen gas is 1800 . What is the total translational kinetic energy of the gas molecules?