A typical male sprinter can maintain his maximum acceleration for 2.0 s and his maximum speed...
A typical male sprinter can maintain his maximum acceleration for 2.0 s and his maximum speed is 10m/s . After reaching this maximum speed, his acceleration becomes zero and then he runs at constant speed. Assume that his acceleration is constant during the first 2.0 s of the race, that he starts from rest, and that he runs in a straight line.
How far has the sprinter run when he reaches his maximum speed?
What is the magnitude of his average velocity for a race of the following lengths: (i) 50.0 m, (ii) 100.0 m, (iii) 200.0 m?
Express your answers in ascending order using two significant figures separated by commas.
Homework Answers
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A typical male sprinter can maintain his maximum acceleration
for 2.0 s and his maximum speed...
One simple model for a person running the 100 m dash is to assume the sprinter runs with constant acceleration until reaching top speed, then maintains that speed through the finish line
One simple model for a person running the 100 m dash is to assume the sprinter runs with constant acceleration until reaching top speed, then maintains that speed through the finish line. If a sprinter reaches his top speed of 10.8 m/s in 2.54 s, what will be his total time?
One simple model for a person running the 100 mdash is to assume the sprinter runs...
One simple model for a person running the 100 mdash is to assume the sprinter runs with constant acceleration until reaching top speed, then maintains that speed through the finish line. If a sprinter reaches his top speed of 11.5 m/sin 2.74 s , what will be his total time?
An 87.0 kg sprinter starts a race with an acceleration of 2.28 m/s^2. If the sprinter...
An 87.0 kg sprinter starts a race with an acceleration of 2.28 m/s^2. If the sprinter accelerates at that rate for 30 m, and then maintains that velocity for the remainder of the 100 m dash, what will be his time (in s) for the race?
An Olympic class sprinter starts a race with an acceleration of 4.10 m/s^2 what is her...
An Olympic class sprinter starts a race with an acceleration
of 4.10 m/s^2 what is her speed in m/s 2.20 s later
An Olympic-class sprinter starts a race with an acceleration of 4.10 m/s2 (a) What is her speed (in m/s) 2.20 s later? m/s
Ch. 2.1.2.6 Problem 2.73 K18 of Constants An elite human sprinter reaches his top speed of...
Ch. 2.1.2.6 Problem 2.73 K18 of Constants An elite human sprinter reaches his top speed of 11.8 m/s at a time of 7.07 s after the starting gun. In the first 1.43 s, however, he reaches a speed of 8.00 m/s, with a nearly constant acceleration. Part A Calculate his maximum acceleration during the starting phase Express your answer with the appropriate units QuxValue Units Submit Request Answer Part B Calculate his average acceleration to top speed. Express your answer...
Item 17 A sprinter runs a 100 m dash in 12.0 s. She starts from rest...
Item 17 A sprinter runs a 100 m dash in 12.0 s. She starts from rest with a constant acceleration ay for 2.6 s and then runs with constant speed for the remainder of the race. Part A What is the value of ar? Express your answer with the appropriate units. μΑ ? ay = Value Units Submit Request Answer
A sprinter is running at a speed of 9.30 m/s, then accelerates at a constant rate...
A sprinter is running at a speed of 9.30 m/s, then accelerates at a constant rate of 1.37 m/s2 for the last 9.70 m of the race. What is his final speed as he crosses the finish line?
A sprinter is running at a speed of 8.70 m/s, then accelerates at a constant rate...
A sprinter is running at a speed of 8.70 m/s, then accelerates at a constant rate of 2.65 m/s2 for the last 9.80 m of the race. What is his final speed as he crosses the finish line? NumberUnits How long did it take him to run the last 9.80 m of the race? NumberUnits
Circle Circumfe Circle Diameter r is radius Finish A sprinter runs the curve of this 200...
Circle Circumfe Circle Diameter r is radius Finish A sprinter runs the curve of this 200 m in 10.34 s. Assume he ran in a lane which makes a semicircle (r 36.3 m) for the first part of the race. At 3.44 s into the race his speed is 4.0 m/s. At 8.0 s into the race his speed is 9.6 m/s. His speed after the curve was 12.8 m/s. What was the sprinter's radial acceleration at 3.44 s? Answer:...
Circle Circumfe Circle Diameter r is radius Finish A sprinter runs the curve of this 200...
Circle Circumfe Circle Diameter r is radius Finish A sprinter runs the curve of this 200 m in 10.34 s. Assume he ran in a lane which makes a semicircle (r 36.3 m) for the first part of the race. At 3.44 s into the race his speed is 4.0 m/s. At 8.0 s into the race his speed is 9.6 m/s. His speed after the curve was 12.8 m/s. What was the sprinter's radial acceleration at 8.0 s? Answer:...
An Olympic class sprinter starts a race with an acceleration
of 4.10 m/s^2 what is her speed in m/s 2.20 s later
An Olympic-class sprinter starts a race with an acceleration of 4.10 m/s2 (a) What is her speed (in m/s) 2.20 s later? m/s
Ch. 2.1.2.6 Problem 2.73 K18 of Constants An elite human sprinter reaches his top speed of 11.8 m/s at a time of 7.07 s after the starting gun. In the first 1.43 s, however, he reaches a speed of 8.00 m/s, with a nearly constant acceleration. Part A Calculate his maximum acceleration during the starting phase Express your answer with the appropriate units QuxValue Units Submit Request Answer Part B Calculate his average acceleration to top speed. Express your answer...
Item 17 A sprinter runs a 100 m dash in 12.0 s. She starts from rest with a constant acceleration ay for 2.6 s and then runs with constant speed for the remainder of the race. Part A What is the value of ar? Express your answer with the appropriate units. μΑ ? ay = Value Units Submit Request Answer
A sprinter is running at a speed of 8.70 m/s, then accelerates at a constant rate of 2.65 m/s2 for the last 9.80 m of the race. What is his final speed as he crosses the finish line? NumberUnits How long did it take him to run the last 9.80 m of the race? NumberUnits
Circle Circumfe Circle Diameter r is radius Finish A sprinter runs the curve of this 200 m in 10.34 s. Assume he ran in a lane which makes a semicircle (r 36.3 m) for the first part of the race. At 3.44 s into the race his speed is 4.0 m/s. At 8.0 s into the race his speed is 9.6 m/s. His speed after the curve was 12.8 m/s. What was the sprinter's radial acceleration at 3.44 s? Answer:...
Circle Circumfe Circle Diameter r is radius Finish A sprinter runs the curve of this 200 m in 10.34 s. Assume he ran in a lane which makes a semicircle (r 36.3 m) for the first part of the race. At 3.44 s into the race his speed is 4.0 m/s. At 8.0 s into the race his speed is 9.6 m/s. His speed after the curve was 12.8 m/s. What was the sprinter's radial acceleration at 8.0 s? Answer:...
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