Question

. A body starting from rest covers a distance of 9 m in the fifth second. The acceleration of the body is:
(a) 2 m/s2
(b) 0.2 m/s2
(c) 1.8 m/s2
(d) 4 m/s2
plzz tell its urgent

Answer 1

Answer:

distance covered in ( 5^{text {th}} ) second ( =S_{5}-S_{4} )

[

begin{array}{l}

=u(5)+frac{1}{2} a(25)-u(4)+frac{1}{2} a(16)

=u+frac{9}{2} a

=0+frac{9 a}{2}=frac{9}{2} a

=frac{9}{2} a={{a}=2 m/s2 }{}

end{array}

]

Option (1)