Answer:
a) The value of
b) The velocity is
.
Explanation:
Part a
Given:
and
Find the value of given expression =

Put a, b value in given expression



The value of
Part b
Given:
the initial velocity is

the acceleration is

the time is
seconds
The given formula
to find the velocity.
where
,
u = initial velocity
t = time
Put all the value in given velocity formula




Therefore, the velocity is
.