I need help with some true and false problems in physics?

A. Impulse is the product of force and distance.


B. Kinetic energy is the energy of motion.


C. The force necessary to lift an object is its mass times g.


D. Work is done to hold an object in the classroom.


E. Stopping distance is doubled, if speed is doubled.


F. A joule is a newton times a meter.





I got these answers but i'm not sure about it..


A. False


B. True


C. True


D. True


E. False


F. True





Thanks in advance!I need help with some true and false problems in physics?
D is false, otherwise you're fine.





For work to be done, there has to be a change in distance. To hold it in one place, no work is done.