Physics Review Question Unit: mechanics Year: 1988 Question#: 1 Question: What is the distance travelled by an object with an average speed of 6.0 meters per second for 8.0 seconds? (1 ) .75 m (2 ) 1.3 m (3 ) 14 m (4 ) 48 m What is this question really asking? Explanation by: Jill S [ Return to question menu ] Answer 1 .75 m INCORRECT .75 m is the incorrect answer simply because of the equation that is used to find distance, . The answer .75 could be found if you used the equation wrong. If you set up the equation v=t/d. return to top Answer 2 1.3 meters INCORRECT 1.3 m is the incorrect answer because of the formula . The only way to get 1.3 m is to use the equation wrong. If you had switched the variables to have t=V/d then you could have gotten 1.3 m. return to top Answer 3 14 m INCORRECT 14 m is the incorrect answer for this problem because of the formula used to solve the equation, V=d/t. The only way to have gotten the answer of 14 m is to have subtracted either 6.0 m/s or 8.0 seconds from the variable d. The unit would also be wrong, meters/second not just meters. return to top Answer 4 48 m CORRECT 48 m is the correct answer because of the distance formula. The formula is . Here we are trying to find the distance of the moving object, therefore s is the variable. v in the speed the object traveled, so v is 6.0 meters per second. 8.0 seconds is the time that the object took to travel x distance. FORMULA- 6 m/s=d/8.0 sec.. (8.0 sec.) (6 m/s)=(d/8.0 sec..)(.8.0 sec./1) 48 meters. return to top What's this question really asking? The question is really asking what the distance is the the object using the information the is already given to you. return to to 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.