a. h=vi*time-4.9 t^2
b. initial KE=final PE
1/2 m v^2=mgh
v^2=2*9.8*50,000
solve for v.
1.) Let's say that an an orange is launched upward at 22m/s. What is the displacement 3.5s later?
2.) When a volcano erupts, big rocks have been measured to reach heights of 50km (50,000m) What would the initial velocity need to be in order to reach such heights (neglect air resistance)?
1 answer