Acar travels south on a highway for two hours at 90 km/hr. the car then reverses and drives for three hours at 70 km/hr. what is the car's change in position relative to where it started?

Write the equation for momentum, first using symbols for the variables, then using words for the variables.

From 0 to 5 seconds john pushed a box 5 meters. from 5 to 10 seconds, paul pushed the same box another 5 meters. who did more work? a. john b. paul c. john and paul did the same amount of work.

At an oceanside nuclear power plant, seawater is used as part of the cooling system. this raises the temperature of the water that is discharged back into the ocean. the amount that the water temperature is raised has a uniform distribution over the interval from 10° to 25° c. what is the standard deviation of the temperature increase?