Kathy is driving her 1000 kilogram car at 20 m/s and does not notice that i don't dump truck has stopped in front of her she rear ends the 3000 kilogram truck after the collision cathy bounces back at -10 m/s what is the final velocity of the dump truck

a. -20 m/s
b. -10 m/s
c. 10 m/s
d. 20 m/s

Lin yao looks at the back of a spoon. how should she describe her reflection? upside down and smaller upside down and larger right-side up and smaller right-side up and larger

Avehicle accelerates from 0 to 30 m/s in 10 seconds on a straight road

Ineed this now one scientist feels that the changes in global climatic patterns may be good for the health of the biosphere. another scientist feels that sharp changes in climatic patterns could result in the extinction of the biosphere. which of these is the most likely reason the two scientists gave conflicting opinions on the impact of changes in the global climatic pattern? they do not have enough knowledge on the topic. they did not discuss the issue among themselves. they believe conflicting opinion strengthens science. they study different areas of science and have different scientific focuses.