Question

A motorboat starting from rest on a lake accelerates in a straight line at a
constant rate of 3.0m/s 2 for 8.0s. Find the final velocity of the boat.

Answer 1

GIVEN:

initial velocity (u)=0

acceleration (a)=3m/s²

time (t)=8s

TO FIND:

final velocity=?

FORMULA

$v = u + at$

TERMS IDENTIFICATION:

• v=final velocity
• u=initial velocity
• a=acceleration
• t=time taken

SOLUTION:

v=u+at

v=0+3×8

v=24m/s

I hope this helps

Answer 2

Answer:

Explanation:

initial velocity,u=0

accerlation,a +3ms^-2

time taken =8 s

using equation of motion

distance travelled by boat s=ut+1/2at^2

                                          =0*8=1/2*3*(8)^2

                                     =96m

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