Can someone check these?
Kendall (22lbs) starts from rest at the top of a 5.2 m tall slide
a. Find her speed at the bottom of the slide (height - 0.2m). Solve using conservation of energy
For this one I got 7.41 m/s
b. If she leaves like a horizontal projectile, how far (x) away from the edge of the slide will she land
For this one I got 11.2m
c. If you throw a softball straight up with a velocity of 8 m/s, how high will it go?
For this one I got 3.26m
d. How much sooner (sec) will a loud sound travel 1.54 km to you through steel (speed of sound in steel = 5950m/s) that in air? (speed of sound in air = 340 m/s)
For this one I got
steel: 3.86 sec
air: .22 sec