edu/ef151p-2018-08/sys.php?f-assess/main 14 24 m/s STEP 9.967,356: THROW COMPUTE

Question

edu/ef151p-2018-08/sys.php?f-assess/main 14 24 m/s STEP 9.967,356: THROW COMPUTER OUTOFWINDOw Dr. Hargrove has reached Step 9,967,356 and is throwing her computer out the window. These problems do not have to be written out for your portfolio. NOTES IMAGES DISCUSS UNITS STATS HELP Part Description Answer Chk History Determine the x-coordinate of the computer at 0.7 seconds. (include units with answèr) Try 2-CORRECT, 11.44 points added to your score A: 16.3 m A. C: 16.30 m Determine the y-coordinate of the computer at 0.7 seconds. (include units with answer) Hints: 1.1 | # tries: 2L Show Detais v' Try 2 . CORRECT! Hints-1.1 | # tries: 2 | show Details A: 6.47 m C: -6.468 m 11.44 points added to your score B. Determine the magnitude of the velocity of the computer at 0.7 seconds (include units with answer) .. Try 2-your answer of 17.54 m/s | # tries: 2 i. Hide Details 11.2 pts.96%l Format Check C. oK using first value as 284 try penalty

Explanation / Answer

for velcoity Vector V = vx i + Vy j

magnitude of velocity

V^2 = Vx^2 + Vy^2

so here

vx = 16.3/0.7 = 22.9 m/s

vy = -6.47/0.7 = -9.24 m/s

v^2 = (22.9)^2 + (-9.24)^2

v^2 = 609.84

v = 24.69 m/s

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