What is the kinetic energy of A bicycle with a mass of 14 KG traveling at a velocity of 3M/S

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

Which of the following are guidelines to follow for obtaining accurate observations