Ex 3. A 200kg empty railroad cart moves east at 15m/s. A 50kg rock is
dropped straight down into the moving
cart. What is the final speed of the
railroad cart?

your answer is c! hope this : )

get the total number of pieces of fruit and divide it by 4 to get the average. the result is the answer to the problem. 14 total number of fruits and there are 4 members. 14 divided by 4 is equals to 3.5.

answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;