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hey these problems are really hard. if you are going to help, i would super appreciate you giving the the steps or clues that will help me solve it rather than just the answer!! Q) A 30-kg shopping cart full of groceries sitting at the top of a 2 m hill begins to roll until it hits a stimp at...

My textbook sucks. the question is complicated. help!!! Q) On a jump, a 65 kg person lands on the beach with a speed of 4.0 m/s making a 0.20-m deep indentation in the sand. With what average force did the parachuter hit the sand? i cant use the formula force = mass * acceleration b/c...

okay now i have the answers. i just dont know how to get them. ive tried many ways. ok heres the question: Q) Jeff stands on top of a 100 m cliff. He holds his biology textbook over the edge and throws it straight up at 23 m/s. on the way back down, he doesnt catch it but lets it fall. how far...

my physics textbook is pretty pathetic. its too conceptual and lacks formulas. id reallly appreciate it if u could help me!! :) Q) a coaster ascends a 34.1 m hill and then drops 21.9 m before moving on to the next hill. The train of cars has a mass of 4727 kg. a) how much work is required to...