a lunar lander is descending slowly on the surface of the moon. the engine is cut-off when the lander is 5.0 m above the moon's surface and has a downward speed of 0.8 m/s. what is the speed of the lander just before it touches the moon's surface? acceleration due to gravity on the moon is 1.6 m/s2.

Jim has found that he must consume 2,300 calories a day to reach his health goals, but he doesn't want to give up his afternoon snack of pretzels. unfortunately, he tends to eat the entire bag — which amounts to 1,300 calories! what strategy should jim use to improve his habits?

How many liters of 60% alcohol solution should be added to 40 liters of a 20% alcohol solution to make a 50% solution?

Which scenario describes intraspecific, indirect competition? a. a peacock defends its territory against another peacock. b. lions and hyenas compete for the same prey animals. c. a male black bear eats fish in an area of a lake, so other black bears can’t. d. different species of birds fight over spilled popcorn on the ground.