Question

A particle moves from point P (1,2,3) to Q(2,1,4) under the action of a constant force f=(2i+j+k) N. work done by the force is​

Answer 1

Answer:

2N

Explanation:

for P co-ordinates are i+2j+3k

For Q 2i+j+4k

displacement =Q-P

i-j+k

w=f.s

=2-1+1=2N

Answer 2

Answer:

Explanation:

Here you go