If the mass of a material is 44 grams and the volume of the material is 7 cm^3 what would the density of the material be

Standing side by side ,you and a friend step off a bridge at different times and fall for 1.6s to the water below.your friend goes first,and you follow after he has dropped a distance of 2.0m.when your friend hits the water,is the seperation between the two of you 2.0m or more than 2.0m? verify your answer with a calculation.

Mixing salt in water is an example of physical change

Match each type of lever with the correct diagram. 1. first-class 2. third-class 3. second-class