Astudent writes in a laboratory notebook: i placed a piece of iron in a beaker of water and the iron sank to the bottom of the beaker. -- what the student wrote in the laboratory notebook is an example of a(n) *
1. observation
2. prediction
3. inference
hypothesis

Which pair of sentences is describing the same velocity? a. a car is parked. a car is moving in circles. b. a bus drives 40 miles per hour north. a truck drives 50 miles per hour north. c. a boy walks east at 6 kilometers per hour. a girl walks west at the same speed as the boy. d. valerie rides her bike south at 8 kilometers per hour. owen jogs south at 8 kilometers per hour.