the position vector of a particle is determined by the expression or vector is equal to 3T^2 i vector + 4T ^2j vector + 7 k what's the distance transversed in first 10 seconds is what
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Maybe U asked Displacement. Calculating distance will be cumbersome as it is some complex parabola
r (i)= Initial position vector
r (f) = Final position vector
Since r is the finction of time.
r(i)=r(0)=7 k^
r(f)=r(10)=3*10² i^ + 4*(10)² j^ +7 k^
Now ,
Displacement vector= r(f)-r(i)
D= |300 i^ + 400j^ +(7-7)k^ |
=500
(a) is correct !!
r (i)= Initial position vector
r (f) = Final position vector
Since r is the finction of time.
r(i)=r(0)=7 k^
r(f)=r(10)=3*10² i^ + 4*(10)² j^ +7 k^
Now ,
Displacement vector= r(f)-r(i)
D= |300 i^ + 400j^ +(7-7)k^ |
=500
(a) is correct !!
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