The graph below shows the velocity versus time for a bullet as it is fired from a gun, travels a short distance, and enters a block of wood. Compute the ac a, b, and c. (Indicate the direction with the sign of your answer. Assume the bullet's initial motion is in the positive direction.) v (m/s) 800 700 600 500 400 300 200 100 a t (S) 0.001 0.002 0.003 Time a: Estimate the rise and run. rise m/s run Compute the acceleration at time a. (Use your estimates.) m/s Time b: ime b: Estimate the rise and run. rise m/s run S Compute the acceleration at time b. (Use your estimates.) m/s? Time c: Estimate the rise and run. rise m/s run Compute the acceleration at time c. (Use your estimates.) m/s2
The graph below shows the velocity versus time for a bullet as it is fired from a gun, travels a short distance, and enters a block of wood. Compute the ac a, b, and c. (Indicate the direction with the sign of your answer. Assume the bullet's initial motion is in the positive direction.) v (m/s) 800 700 600 500 400 300 200 100 a t (S) 0.001 0.002 0.003 Time a: Estimate the rise and run. rise m/s run Compute the acceleration at time a. (Use your estimates.) m/s Time b: ime b: Estimate the rise and run. rise m/s run S Compute the acceleration at time b. (Use your estimates.) m/s? Time c: Estimate the rise and run. rise m/s run Compute the acceleration at time c. (Use your estimates.) m/s2
Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter3: Accelerated Motion
Section: Chapter Questions
Problem 8STP
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Step 1
acceleration is change in velocity per unit time.
To find acceleration from velocity(y axis) - time(x axis) graph at a point, we have to draw tangent at that point and then find coordinates of that tangent,
so that slope=change in y coordinates/change in x coordinates
this slope is equal to acceleration at that point.
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