Physics Fundamentals
2nd Edition
ISBN: 9780971313453
Author: Vincent P. Coletta
Publisher: PHYSICS CURRICULUM+INSTRUCT.INC.
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Chapter 2, Problem 53P
To determine
To Compute: The acceleration of the hand.
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Now let’s apply our definition of average velocity to a swimming competition. During one heat of a swim meet, a swimmer performs the crawl stroke in a pool 50.0 mm long, as shown in (Figure attached). She swims a length at racing speed, taking 24.0 ss to cover the length of the pool. She then takes twice that time to swim casually back to her starting point. Find (a) her average velocity for each length and (b) her average velocity for the entire swim.
If the swimmer could cross a 13 kmkm channel maintaining the same average velocity as for the first 50 mm in the pool, how long would it take?
Express your answer in hours.
A rock is thrown over a cliff from the origin. What is the magnitude of its displacement 2.0 seconds
later if the initial velocity is
m
Vo = 3.2 +2.4
m
S
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A car starts from rest and accelerates uniformly over a time of 5.21 seconds for a distance of 110 m. accelerates down a runway at 3.20 m/s2 for 32.8 s until is finally lifts off the ground, If Upton free falls for 2.60 seconds. The takeoff speed for this plane will be 65 m/s. Assuming this minimum acceleration, what is the minimum allowed length for the runway?
I want typed good format answer.Please don't skip it as advanced physics as it is simple physics problem.
Chapter 2 Solutions
Physics Fundamentals
Ch. 2 - Prob. 1QCh. 2 - Prob. 2QCh. 2 - Prob. 3QCh. 2 - Prob. 4QCh. 2 - Prob. 5QCh. 2 - Prob. 6QCh. 2 - Prob. 7QCh. 2 - Prob. 8QCh. 2 - Prob. 9QCh. 2 - Prob. 1P
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- A car is traveling on a straight, level road under wintry conditions. Seeing a patch of ice ahead of her, the driver of the car slams on her brakes and skids on dry pavement for 70 m, decelerating at 6.0 m/s2. Then she hits the icy patch and skids again. The car takes a duration of 85.0 s to come to rest during the second skid. If her initial speed was 50 m/s, what was the magnitude of the deceleration on the ice during the second skid. 1. Which of the following kinematic equations would you use to determine the velocity of the car after skidding on the dry pavement for 70 m? 2. Determine the velocity of the car after skidding on the dry pavement for 70 m. 3. Which of the following kinematic equations would you use to determine the deceleration of the car after skidding to a stop on the icy patch? 4. Determine the magnitude of the deceleration of the car after skidding to a stop on the icy patch.arrow_forwardA polar bear starts at the North Pole. It travels 1.0 km south, then 1.0 km east, and then returns to its starting point. This trip takes 0.75 hr. a) What was the bear's average speed? b) What was the bear's average velocity?arrow_forwardAn object is released from rest near and above Earth’s surface from a distance of 10m. After applying the appropriate kinematic equation, a student predicts that it will take 1.43s for the object to reach the ground with a speed of 14.3m/s . After performing the experiment, it is found that the object reaches the ground after a time of 3.2s. What is the final speed of the ball? Assume that the acceleration of the object is constant as it falls.arrow_forward
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