Your pencil rolled off your table (2m tall ) and fell for 0.5 seconds. What was its speed when it hit the floor ?

F500 j of energy were added to 1 kg of each of these samples, which would experience the least temperature increase?

The graph represents the distance a car travels over time while on the highway. which statement about the car's trip is accurate? a) the car does not move over time. b) the car travels at a constant velocity. c) the car's velocity increases constantly over time. d) the car's velocity decreases constantly over time.

Could we see a galaxy that is 20 billion light-years away?