Question

A motorboat starting from rest on a lake accelerates in a straight
line at a constant rate of 3.0 ms for 8.0 s. How far does the
boat travel during this time?​

Answer 1

Answer:

a=3

t=8

u=0

s=?

we apply motions second equation

s=ut+1/2×at^2

=0×8+1/2×3×8^2

=8+1/2×3×64

=8+1×3×32

=105

Answer 2

Given, initial velocity of boat is: u=0

Acceleration is: a=3 ms^2

Time is: t=8 s

Using second equation of motion:

s=ut+  1/2at^2

s=0×8+  1/2×3×8^2  =96 m.