1. A person covers a distance of 320 miles in a travel time of 8 hours. What is the speed for this trip? ans0201
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2. A car travels with an average speed of 55 miles/hr. What is this speed in - km/hr?
- km/s?
- m/s? ans0202
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3. The velocity of a car moving in a straight line increases from 8 m/s to 22 m/s in 7 seconds. What is the average acceleration of the car during this period? ans0203
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4. Starting from rest and moving in a straight line, a runner achieves a speed of 7.0 m /s in a time of 4.5 seconds. Determine the average acceleration of the runner. ans0204
(41.0K)
5. The velocity of a car decreases from 25 m/ s to 12 m / s in a time of 4.2 seconds. What is the average acceleration of the car? ans0205
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6. A car initially at rest accelerates at the constant rate of 2.0 m / s2 for a time of 5.0 seconds. Determine: - the velocity of the car after 5.0 seconds.
- the distance the car traveled during this process. ans0206
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7. The position of an object with respect to time was measured and recorded with the following results: Distance (meters) | Time (seconds) | 0 | 0 | 5 | 10 | 10 | 20 | 15 | 30 | 20 | 40 | 25 | 50 |
Graph the distance versus time. ans0207
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8. For the graph produced in problem 7, calculate the velocity. ans0208
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9. For the graph of velocity versus time shown below, calculate the acceleration. ans0209
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(13.0K) 10. Does the velocity in problem 9 increase or decrease with time? ans0210
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