Aflight attendant pulls her 70 n flight bag a distance of 253 m along a level airport floor at a constant speed. the force she exerts is 40 n at an angle of 53° above the horizontal

a. find the work that she does on the flight bag
b. find the work done by the force of friction on the bag

Sara is creating an experiment. her hypothesis states the following. if i increase the air in my tires, then i will get better gas mileage. if this is her hypothesis what column titles do we need in our date table? a. air pressure in tire (psi) and gas mileage (mph) b. air pressure in the atmosphere (psi) and gas mileage (mph) c. miles (m) and gallons per mile (g) d. old battery and new battery

Truck traveling west on the highway experiences an acceleration to the east. what could be the cause of this acceleration

Suppose you have three polarizing filters, with the second at an angle of 42∘ to the first and the third at an angle of 90∘ to the first. by what perfect will the original intensity of unpolarized light be reduced to after passing through all three filters?