1,1 &course;, id: 182815-18contentid·837813. &steps; nul blackboard.com/webapps/

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1,1 &course;, id: 182815-18contentid·837813. &steps; nul blackboard.com/webapps/assessment/take/launchjsp?course assessment id--56351 QUESTION 16 A varying force acts on a 40 kg weight shown in the following F-t diagram shown below. What is the object's velocity in m 4 s if it starts from rest? FIN) 2 4 t(s) O 0.30 m/s O 0 m/s O 0.15 m/s O 0.075 m/s QUESTION 17 What is the determinant of the followina matrix Click Save and Submit to save and submit. Click Save All Answers to save all answers Save All mCortana Ask me anything

Explanation / Answer

Q-16

vo = initial velocity = 0 m/s

vf = final velocity

m = mass = 40 kg

Impulse = area of the F-t graph

Impulse = Area of the triangle = (0.5) (height) (base)

Impulse = (0.5) (3) (4) = 6 N-s

Using impulse change in momentum equation

Impulse = change in momentum

6 = m (vf - vo)

6 = (40) (vf - 0)

vf = 0.15 m/s

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