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The position of a particle is given by $r=3.0t-2.0{{t}^{2}}\hat{j}+4.0\hat{k}$ where t is in seconds and the coefficients have the proper units for r to be in meters. Find the v and a of the particle?
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The correct answer is:
$a\left( t \right)=~-4.0\hat{j}~,~v\left( t \right)=~3.0\hat{i}-4.0\hat{j}$
Correct Option is : (C)
$a\left( t \right)=~-4.0\hat{j}~,~v\left( t \right)=~3.0\hat{i}-4.0\hat{j}$
$a\left( t \right)=~-4.0\hat{j}~,~v\left( t \right)=~3.0\hat{i}-4.0\hat{j}$
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