Question

The position of a particle is expressed as = (4t2 + 2)i + (2t3+4)j, determine the velocity
of a particle at t = 1s.​

Answer 1

Step-by-step explanation:

(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