Question

2.
A car starts from rest and accelerates uniformly to
a speed of 90 km/h in 10 s. The accleration of
particle is
(1) 1.5 m/s2
(2) 3 m/s
647 9 m/s2
(3) 2.5 m/s2​

Answer 1

Answer:

initial velocity (u)= 0m/s

final velocity (v)=90km/h

=90×5/18

=25m/s

time(t)=10s

acceleration (a)= v - u /t

= 25- 0/10

= 25/10

=5/2

=2.5m/s