1.

The velocity of a particle is v (i+i-R)m/s. A force of 10 3N is applied in the direction of velocity.Find the applied force in vector form.

Answer»

The direction vector of velocity = (i+j-k)/√(1²+1²+1²) = i/√3 +j/√3 -k/√3

now force has magnitude of 10√3 and the direction vector is same as of velocity

so force vector is (10√3)( i/√3 +j/√3 -k/√3) = 10i+10j-10k

thank you so much brother



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