Select the correct answer.
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.

In what way do investigations build scientific knowledge? the results of investigations lead to questions that cannot be tested. they reflect the opinions and social values of scientists, ensuring valid information. the results of investigations lead to new questions, which lead to new investigations. they are not influenced by the research of earlier scientists, so they are able to address gaps in understanding. i