A car accelerates from rest to 30 km/h in 5 seconds. What is the acceleration of the car

What are similarities and differences between refraction, reflection, diffraction and absorption?

What is special about a dc circuit ?

Determine the moment of the force f about an axis extending between a and c. express the result as a cartesian vector. a is at the origin, c is at (4,3,0) and f = (4i + 12j -3k) lb coming out of b (4,3,-2).