A toy rocket moving vertically upward passes by a 2.1 -high window whose sill is 7.0 above the ground. The rocket takes 0.157 to travel the 2.1...

A toy rocket moving vertically upward passes by a 2.1 -high window whose sill is 7.0 above the ground. The rocket takes 0.157 to travel the 2.1 height of the window.A.What was the launch speed of the rocket? Assume the propellant is burned very quickly at blastoff.B.How high will the rocket go?