Physics Review Question

Unit: Mechanics
Question: A boat initially traveling at 10. meters per second accelerates uniformly at the rate of 5.0 meters per second2 for 10. seconds. How far does the boat travel during this time?

(1 ) 50. m
(2 ) 250 m
(3 ) 350 m
(4 ) 500 m

What is this question really asking?

[ Return to question menu ]

Answer 1
50. m


To come up with 50. m as your answer it is likely that you took thae acceleration of 5m/s2 and multiplied it by either the 10 second time or by the 10 m/s initial velocity. Either way, there is no formula d=at nor is there a formula d=avi. return to top

Answer 2
250 m


You seem to have made a common mistake. You only used the last half of the formula:

s=vit + 0.5at2
return to top

Answer 3
350 m


Congratulations! You correctly used the formula :

s=vit + 0.5at2 return to top

Answer 4
500 m


To get this answer you probably took the three numbers you were given and multiplied them together. Make sure there is method to your madness...use a formula. return to top

What's this question really asking?

This question is really asking if you understand the relationship between acceleration, initial velocity, and distance travelled. Here is a list of what each of the pieces of information you are given actually translate into:
vi=10. m/s
a=5.0 m/s2
t= 10. sec.
s= ? return to top

[Home]  [Lessons]  [Review]    [Links]

This web site is designed and maintained by Science Joy Wagon and may not be reproduced or redistributed without written permission from Science Joy Wagon.
Contact with comments.