Reebear8372
13.02.2020 •
Physics
The position of a 2.75×105N training helicopter under test is given by r⃗ =(0.020m/s3)t3i^+(2.2m/s)tj^−(0.060m/s2)t2k^.
Find the net force on the helicopter at t=5.0s.
Express your answer in terms of i^, j^, k^. Use the 'unit vector' button to denote unit vectors in your answer. Express your coefficient using two significant figures.
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Ответ:
Explanation:
The position vector is
Differentiating with respect to time
Differentiating with respect to time
Mass of the helicopter
Net force on the helicopter
At t = 5 s
The force is
Ответ:
kilometer is the largest measurement