The trucks begin to move at the same speed. Which truck needs a larger force to start moving?
A: a mail truck carrying 350 pounds of mail
B: a mail truck carrying 500 pounds of mail
Look for the mail truck that is heavier.
A mail truck carrying 500 pounds of mail is heavier than a mail truck carrying 350 pounds of mail. So, the mail truck carrying 500 pounds needs a larger force to start moving at the same speed as the other mail truck.