If the position vector of the particle is given by r-3t2-5t-4k-Find thea the velocity of the particle at t-3 sb speed of the particle at t-3 s

r=3t^2i+5tj+4k a.velocity v=drdt=6t+5 at t=3s #160; v=6(3)+5=18i+5j v(1)=(18,5,0) b.speed s=|v(1)|=√(18^2+5^2)=√(349) ...

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Relative Velocity

If the positi...

Question

If the position vector of the particle is given by $\to r = 3 t^{2}^i + 5 t^j + 4^k$ .
Find the
a) the velocity of the particle at $t = 3 s$
b) speed of the particle at $t = 3 s$

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