Question

14. If the initial velocity of a firecracker rocket is 100m)
s. Find its maximum height can be reached by the
rocket. (take g = 10m/s)
(1) 500 m
(2) 1000 m
(3) 800 m
(4) 400 m
​

Answer 1

u=100 m/s

v=0m/s

a/G=10m/s^2

v^2+u^2=2GS

0+ 10000=2×10S

S=10000/20

S=500m

Answer 2

u=100m/s

v=0

h=h

a=g=10

therefore v2=u2+2as

=0=10000+20s

therefore 10000/20=s

s = 500m

thus the answer is 500 m

be brainly '

regards

genius 1223 ↓↓↓Ф⊕