A70 kg desk sits on the floor motionless if gravity is pulling it with an acceleration of 9.8 m/s/s how much force is gravity exercising on the desk

Aprisoner is forced to go into one of three rooms, but he can choose which room. the first room is ablaze with fire. the second one is rigged with explosives that will go off as soon as he enters. the third contains a pair of lions who haven't eaten in years. which room should he choose to survive?

Astudent weighing 700 n climbs at constant speed to the top of an 8 m vertical rope in 10 s. the average power expended by the student to overcome gravity is most nearly

The smallest particle of an element that retains its identity in a chemical reaction. true or false