A body of mass 2 kg moving with velocity of v in = 3 i ^ + 4 j ^ ms − 1 enters into a constant force field of 6 N directed along positive z -axis. If the body remains in the field for a period of

Question

A body of mass 2 kg moving with velocity of $v_{in} = 3 \hat{i} + 4 \hat{j} ms^{- 1}$ enters into a constant force field of 6 N directed along positive z -axis. If the body remains in the field for a period of $\frac{5}{3}$ seconds, then velocity of the body when it emerges from force field is

Options:

Answer:

B

Solution:

$a = \frac{B}{2} \hat{k} = 3 \hat{k}, t = \frac{5}{3} s u = 3 \hat{i} + 4 \hat{j} v = u + a t = 3 \hat{i} + 4 \hat{j} + 5 \hat{k}$

TestHub · Accepted Answer

​ a = 2 B ​ k ^ = 3 k ^ , t = 3 5 ​ s u = 3 i ^ + 4 j ^ ​ v = u + a t = 3 i ^ + 4 j ^ ​ + 5 k ^ ​

Physics - Kinematics Question with Solution | TestHub

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