a frog traveling 3 meters/s. how long does it take for the frog to 5 meters? Show your work include units

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?

8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.

Anika asks eva to roll a basketball and then a bowling ball to her. which requires more force to roll, and why?