A projectile is thrown directly upward at a velocity of 12.0 m/s. What is the projectile's maximum height from its starting point before it begins to fall back toward Earth? (g = 9.8 m/s)

Aperson walks first at a constant speed of 4.89 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 2.95 m/s. what is the average speed over the entire trip?

What ions are formed when hcl dissolves in water?

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