How long will it take a rocket traveling at 8 km/s to reach 20 km? (please include the equation)

Question

asked Jun 15, 2022 26.6k views

1 Answer

Ravikanth · Answer 1 · 2022-06-20T01:27:10+0000

Answer:

Explanation:

Use the second kinematic formula

$x_f-x_i=V_it+(1)/(2)at^2\\20=8t+(1)/(2)(9.8)t^2\\4.9t^2+8t-20=0$

Apply the quadratic formula to solve for time. The negative value does not matter because time cannot be negative, its impossible.

I got a value of t = 1.363 seconds