How much energy does a 100-W light bulb use in 8.0 hours?

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

Does heating a metal wire increase or decrease its electrical resistance? why?