A Pickup truck with a mass of 1230 kg is moving at 44 m/s and stops in a distance of 33 m. What is direction and size of the force acting on the truck?

Avalue that describes how heavy an object is and is related to the force of gravity is

With i really need the correct answer!

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