I need help with this plz (zoom in to the picture so it’s not so blurry)

Always use significant figure rules. remember that these rules apply to all numbers that are measurements. if a vector that is 3 cm long represents 30 km/h, what velocity does a 5 cm long vector which is drawn using the same scale represent? a.100 km/h b.60km/h c.50km/h

There are six elements that make up most of the human body. which of the following is not one of these six elements?

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity