A body of mass 5kg starts from the origin with an initial velocity u→ = 30i^ + 40j^ ms-1. If a constant force F→ = - ( i^ + 5j^ )N acts on the body, the time in which the y-component of the velocity becomes Zero is:

VY=UY+ayt⇒ay=−FYm=-55−1m/s2 ∴ 0= 40-1t,⇒ t=40s.

A body of mass 5kg starts from the origin with an initial velocity u→ = 30i^ + 40j^ ms-1. If a constant force F→ = - ( i^ + 5j^ )N acts on the body, the time in which the y-component of the velocity becomes Zero is:

VY=UY+ayt⇒ay=−FYm=-55−1m/s2 ∴ 0= 40-1t,⇒ t=40s.

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A body of mass 5kg starts from the origin with an initial velocity $\vec{u}$ = $30 \hat{i}$ + $40 \hat{j}$ ms^-1. If a constant force $\vec{F}$ = - ( $\hat{i}$ + 5 $\hat{j}$ )N acts on the body, the time in which the y-component of the velocity becomes Zero is:

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$V_{Y} = U_{Y} + a_{y} t \Rightarrow$ $a_{y} = - \frac{F_{Y}}{m} = \frac{- 5}{5} - 1 m / s^{2}$

$∴$ 0= 40-1t, $\Rightarrow$ t=40s.

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A body of mass 5kg starts from the origin with an initial velocity u→ = 30i^ + 40j^ ms-1. If a constant force F→ = - ( i^ + 5j^ )N acts on the body, the time in which the y-component of the velocity becomes Zero is:

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A body of mass 5kg starts from the origin with an initial velocity $\vec{u}$ = $30 \hat{i}$ + $40 \hat{j}$ ms^-1. If a constant force $\vec{F}$ = - ( $\hat{i}$ + 5 $\hat{j}$ )N acts on the body, the time in which the y-component of the velocity becomes Zero is: