Maria received a sample of an unknown substance from her teacher. she measured the sample and found that it had a mass of 13.11 g and a volume of 23.0 ml.
substance density
iodine 4.93 g/ml
bromine 3.12 g/ml
water 1.00 g/ml
acetone 0.785 g/ml
ethane 0.570 g/ml

Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?

3. a lunar exploration vehicle was created by a research team. it weighs 3,000 kg on the earth. it needs an acceleration of 10 m/s2 on the moon. in order to have the same acceleration, what will be the net force acting on the vehicle on the earth?

Select the correct answer. what happens to the acceleration of an object if the net force on it increases? a. the acceleration increases. b. the acceleration decreases. c. the acceleration becomes zero. d. the acceleration remains the same