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Problems 10 I A sprinter starts from rest and accelerates to 10.0 m/s in a time interval of 1.00 s. Find the magnitude and direction of the runner’s average acceleration a during 2-1 Acceleration in One Dimension 2 A girl swims the length of a pool and back in 30.0 s. The pool is 20.0 m long, and the girl's speed is con- 11 this interval. (a) Compute her speed v and her average velocity v. (b) When is her acceleration not equal to zero? 3 A world champion drag racer starts from rest and ac- celerates over a quarter-mile drag strip in 5.80 s. (a) Find the racer's average velocity U, in m/s. (b) The car's speed at the end of the strip is 402 km/h (250 mi/h). Find the average acceleration ā, in stant. 12 m/s². 4 A football player carrying the ball runs straight ahead at the line of scrimmage and directly into a wall of de- fensive linemen. The ball carrier has an initial speed of 8.00 m/s and is stopped in a time interval of 0.200 s. Find the magnitude and direction of his aver- age acceleration. 5 A baseball player hits a line drive, Just before the ball is struck, it is moving east at a speed of 40.0 m/s (90 mi/h). Just after contact with the bat, 1.00 X 10 s later, the ball is moving west at a speed of (112 mi/h). Find the ball's averm 6 A car moves alono 13 sneed

Problems 10 I A sprinter starts from rest and accelerates to 10.0 m/s in a time interval of 1.00 s. Find the magnitude and direction of the runner’s average acceleration a during 2-1 Acceleration in One Dimension 2 A girl swims the length of a pool and back in 30.0 s. The pool is 20.0 m long, and the girl's speed is con- 11 this interval. (a) Compute her speed v and her average velocity v. (b) When is her acceleration not equal to zero? 3 A world champion drag racer starts from rest and ac- celerates over a quarter-mile drag strip in 5.80 s. (a) Find the racer's average velocity U, in m/s. (b) The car's speed at the end of the strip is 402 km/h (250 mi/h). Find the average acceleration ā, in stant. 12 m/s². 4 A football player carrying the ball runs straight ahead at the line of scrimmage and directly into a wall of de- fensive linemen. The ball carrier has an initial speed of 8.00 m/s and is stopped in a time interval of 0.200 s. Find the magnitude and direction of his aver- age acceleration. 5 A baseball player hits a line drive, Just before the ball is struck, it is moving east at a speed of 40.0 m/s (90 mi/h). Just after contact with the bat, 1.00 X 10 s later, the ball is moving west at a speed of (112 mi/h). Find the ball's averm 6 A car moves alono 13 sneed

Physics for Scientists and Engineers, Technology Update (No access codes included)
Physics for Scientists and Engineers, Technology Update (No access codes included)
9th Edition
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter2: Motion In One Dimension
Section: Chapter Questions
Problem 2.37P: A speedboat travels in a straight line and increases in speed uniformly from i = 20.0 m/s to f =...
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Problems 10 I A sprinter starts from rest and accelerates to 10.0 m/s in a time interval of 1.00 s. Find the magnitude and direction of the runner’s average acceleration a during 2-1 Acceleration in One Dimension 2 A girl swims the length of a pool and back in 30.0 s. The pool is 20.0 m long, and the girl's speed is con- 11 this interval. (a) Compute her speed v and her average velocity v. (b) When is her acceleration not equal to zero? 3 A world champion drag racer starts from rest and ac- celerates over a quarter-mile drag strip in 5.80 s. (a) Find the racer's average velocity U, in m/s. (b) The car's speed at the end of the strip is 402 km/h (250 mi/h). Find the average acceleration ā, in stant. 12 m/s². 4 A football player carrying the ball runs straight ahead at the line of scrimmage and directly into a wall of de- fensive linemen. The ball carrier has an initial speed of 8.00 m/s and is stopped in a time interval of 0.200 s. Find the magnitude and direction of his aver- age acceleration. 5 A baseball player hits a line drive, Just before the ball is struck, it is moving east at a speed of 40.0 m/s (90 mi/h). Just after contact with the bat, 1.00 X 10 s later, the ball is moving west at a speed of (112 mi/h). Find the ball's averm 6 A car moves alono 13 sneed
Transcribed Image Text:Problems 10 I A sprinter starts from rest and accelerates to 10.0 m/s in a time interval of 1.00 s. Find the magnitude and direction of the runner’s average acceleration a during 2-1 Acceleration in One Dimension 2 A girl swims the length of a pool and back in 30.0 s. The pool is 20.0 m long, and the girl's speed is con- 11 this interval. (a) Compute her speed v and her average velocity v. (b) When is her acceleration not equal to zero? 3 A world champion drag racer starts from rest and ac- celerates over a quarter-mile drag strip in 5.80 s. (a) Find the racer's average velocity U, in m/s. (b) The car's speed at the end of the strip is 402 km/h (250 mi/h). Find the average acceleration ā, in stant. 12 m/s². 4 A football player carrying the ball runs straight ahead at the line of scrimmage and directly into a wall of de- fensive linemen. The ball carrier has an initial speed of 8.00 m/s and is stopped in a time interval of 0.200 s. Find the magnitude and direction of his aver- age acceleration. 5 A baseball player hits a line drive, Just before the ball is struck, it is moving east at a speed of 40.0 m/s (90 mi/h). Just after contact with the bat, 1.00 X 10 s later, the ball is moving west at a speed of (112 mi/h). Find the ball's averm 6 A car moves alono 13 sneed
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