Acar travels from boston to hartford in 4 hours. the two cities are 240 kilometers apart. what was the average speed of the car during the trip?
a. 4 km/hour b. 960 km/hour c. 36 km/hour d. 60 km/hour

Asmall 21 kilogram canoe is floating downriver at a speed of 1 m/s. what is the canoe's kinetic energy?

The amount of potential energy possessed by an elevated object is equal to what?

Scientists follow specific processes in order to determine valid explanations and conclusions from observations. david observed strange lights in the sky above his home outside of roswell, new mexico. the only explanation that makes sense to him is that there are ufos in the area. what should david do next to verify his explanation?