A roller coaster moves downhill at 30 in/s and then climbs up a hill at 4 m/s. The momentum of the roller
coaster
a. is zero throughout the ride.
b. is greater down the hill than up the hill.
C. is greater up the hill than down the hill.

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?

Which type of reaction is shown in this energy diagram? energy products activation energy reactants time o a. endothermic, because energy is released to the surroundings o b. exothermic, because energy is absorbed from the surroundings o c. exothermic, because energy is released to the surroundings o d. endothermic, because energy is absorbed from the surroundings

The unit of resistivity is the: ohm ohm-cm volt coulomb