A Particle has initial velocity and $left parenthesis 3 space bold i with bold hat on top space plus 4 space bold j with bold hat on top right parenthesis$ has acceleration. $left parenthesis 0.1 space bold i with bold hat on top space plus space 0.3 space bold j with bold hat on top right parenthesis$ Its speed after 10s is

7 unit

$7 square root of 2$ unit

8.5 unit

10 unit

Solution

7 square root of 2

unit

From space first space equation space of space motion straight v equals space straight u space plus at straight v equals space 3 space bold i with bold hat on top space plus space 4 space bold j with bold hat on top space plus 10 space left parenthesis 0.4 space bold i with bold hat on top space plus 0.3 space bold j with bold hat on top space right parenthesis straight v space equals space 7 space bold i with bold hat on top space plus space 7 space bold j with bold hat on top vertical line straight v vertical line equals space 7 square root of 2

Some More Questions From Motion in A Plane Chapter

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