Question

12 A plane starting from rest accelerates at 3 m/s for 25 s. Calculate the

increase in velocity after:
a 1 s
b 5s
C 25 s.​

Answer 1

Answer: 78m/s =A

u=0 ,a=3m/sec^2 ,t=25sec

v=u+at

=0+25×3

=75m/s

after 1sec

v=u+at+75

=0+3×1+75

=78m/s

Step-by-step explanation:

u=0 ,a=3m/sec^2 ,t=25sec

v=u+at

=0+25×3

=75m/s

after 1sec

v=u+at+75

=0+3×1+75

=78m/s