Physics Review QuestionUnit:
MechanicsYear:
1990 Question#:
1Question:
A cart starting from rest travels a distance of 3.6 meters in 1.8 seconds. The average
speed of the cart is(1
) 0.20 m/s(2
) 2.0 m/s(3
) 0.50 m/s(4
) 5.0 m/sWhat is this question really asking?'
Explanation by: Alon B [ Return to question menu
]Answer 1
0.20m/s INCORRECT The first answer is incorrect because the answer does not match the result, after plunging the numbers into the equation. Using you will not get 0.20 m/s as the answer. return to top
Answer 2
2.0 m/s INCORRECT This answer is correct because after pluging in the numbers to , 3.6m / 1.8s, you will get 2.0 m/s. return to top
Answer 3
0.50 m/s INCORRECT Try using return to top
Answer 4
5.0 m/s INCORRECT Try using . return to top
What's this question really asking?
This question is trying to check if you know which formula to use and then if you know which numbers represent what. Average velocity = change in displacement / change in time return to top |

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