Sophie and vivian were trying to push a cart up a ramp. they wanted to decrease the amount of effort they needed to use to get to the top of the ramp. sophie said she wanted to increase the length of the ramp. vivian said she wanted to decrease the length of the ramp. who is correct and why?
be sure of your answer

10 newton object is placed 3 meters from the fulcrum. at what distance on the other side would you need to place a 15 newton object to balance the lever? show your work!

Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?