C. kyrarah is supergirl and flies through the air with 600 J of kinetic energy, what would be her new kinetic energy be if her mass is doubled? halved? D. what would be kyarah new kinetic energy be if her speed is doubled? halved? brought to zero?

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.

The pressure proportional to the area a- inversely b- directly c- increase d-decrease