Two students are lifting their books up from the floor. Student 1 lifts his book up in 0.41 s while Student 2 lifts her equally heavy book up in 0.35 s. Who is more powerful?
A)Student 1
B)Student 2
C)Both are equally powerful
D)Impossible to know

You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.

The average time that it takes for the car to travel the first 0.25m is s. the average time to travel just between 0.25 m and 0.50 m is s. given the time taken to travel the second 0.25 m section, the velocity would be m/s.

Do you think you could give me the answers to #29?