How is velocity different than speed?
velocity is how fast something is moving at one specific moment. example: you can run on a treadmill
at 10 mph.
velocity is speed with direction. example: you can run outside at 10 mph north.
velocity is how fast something speeds up and slows down.
velocity is a measurement of distance.

Which statement best describes how private industry decides where to spend the money on research and development

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

Refrigerant-134a flows through a carnot heat pump cycle at 0.5 kg/s. it is known that the maximum absolute temperature in the cycle is 1.1 times the minimum absolute temperature, and the net power input to the cycle is 2.5 kw. if the refrigerant changes from a saturated vapor to a saturated liquid during the heat rejection process, determine the maximum magnitude of the enthalpy of vaporization for this process in kj/kg (with 3 significant figures).