Question

r=5t²i+j-2t k find the velocity and acceleration​

Answer 1

Answer:

(a)

v

(t)=d

r

/dt

=3.0

i

^

−4.0t

j

^

a

(t)=d

v

(t)/dt

=−4.0

j

^

(b)

v

(2)=3.0

i

^

−8.0

j

^

v(2)=8.54m/s

∠v(2)=tan

−1

(−8/3)=−69.44

∘

with x axis

Step-by-step explanation:

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