8. Exercises

From Mechanics

(Difference between revisions)
Jump to: navigation, search
Line 6: Line 6:
| style="border-bottom:1px solid #797979" width="100%"|  
| style="border-bottom:1px solid #797979" width="100%"|  
|}
|}
 +
 +
 +
===Exercise 8.1===
 +
<div class="ovning">
 +
 +
 +
The acceleration of a jet-ski is (<math>0.9\mathbf{i}+0.7\mathbf{j}</math>) <math>\text{m}{{\text{s}}^{-2}}</math>. Its initial velocity is 4<math>\mathbf{i}</math> <math>\text{m}{{\text{s}}^{-1}}</math> and its initial position is (<math>400\mathbf{i}+350\mathbf{j}</math>) m. The unit vectors are directed east and north respectively.
 +
 +
a) Find the velocity of the jet-ski when t = 10 seconds.
 +
 +
b) Find the position of the jet-ski when t = 10 seconds.
 +
 +
 +
 +
</div>{{#NAVCONTENT:Answer|Answer 8.1|Solution a|Solution 8.1a|Solution b|Solution 8.1b}}

Revision as of 15:37, 12 September 2009

       Theory          Exercises      


Exercise 8.1


The acceleration of a jet-ski is (\displaystyle 0.9\mathbf{i}+0.7\mathbf{j}) \displaystyle \text{m}{{\text{s}}^{-2}}. Its initial velocity is 4\displaystyle \mathbf{i} \displaystyle \text{m}{{\text{s}}^{-1}} and its initial position is (\displaystyle 400\mathbf{i}+350\mathbf{j}) m. The unit vectors are directed east and north respectively.

a) Find the velocity of the jet-ski when t = 10 seconds.

b) Find the position of the jet-ski when t = 10 seconds.


Answer
Answer 8.1
Solution a
Solution 8.1a
Solution b
Solution 8.1b
Retrieved from "http://wiki.sommarmatte.se/wikis/2009/bridgecoursemechanics/index.php/8._Exercises"