Why is measurement important?

What is a good example of instantaneous speed

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

Immediately upon reaching its lowest point, a falling pendulum bob has its greatest amount of energy, which is the initial amount of potential energy. a. heat; less than b. heat; more than c. kinetic; less than d. kinetic; more than