If vector a ⃗ has components a x and a y and makes an angle θ with the +x axis, then

If the speed of a particle triples ,by what factor does its kinetic energy increase?

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

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?