Question

A A rocket shoots up 123 meteri. What is its initial velocity -​

Answer 1

Answer:

Initial Velocity= 49 m/s

Time period= 5 secs

Explanation:

THIS IS THE COMPLETE QUESTION BELOW

A rocket shoots up 123 meters. What is it initial velocity?How long is it ascending

The initial velocity can be calculated using the expression below

u= √( 2gh)

Where g= Acceleration due to gravity= 98 m/s^2

h= height

Substitute the values we have

u = √(2*9.8*123)

u=√( 2410.8)

u = 49 m/s

the time period can be calculated as

(49/9.8)

= 5 sec

Hence time period is 5 secs