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
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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 accele
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
b
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/s2
Time b:
Time b:
Estimate the rise and run.
rise
m/s
run
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
Transcribed Image Text: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 accele 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 b 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/s2 Time b: Time b: Estimate the rise and run. rise m/s run 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
Expert Solution
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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