Question

An aeroplane lands with the velocity 80 m/s and comes to rest after covering a. runway of 1500 m calculate (i) retardation (ii) Time in which the aeroplane comes to rest

Answer 1

u= 80m/s

v=0

s=1500

a=?

t=?

v²-u²=2as

0²-80²=2×a×1500

-6400=3000×a

-a= 6400/3000

-a=2.13

a = -2.13

v=u+at

0=80+ -2.13 ×t

-t +2.13 = 80

t=80+2.13

r=82.13 ans.

Answer 2

Answer:

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