Question

Considering two vectors F =(4icap - 10jcap)N and r = (-5icap -3jcap)m, compute |r*F|/31
Please explain also step-wise

Answer 1

Ramshyam7godAmbitious

V=3i+6xj

V=dx/dt i + dy/dt j

dx/dt =3.........(1)

dy/dt=6x........(2)

Take eq.(1)....

dx=3.dt

Integrate both sides,we get-

x=3t .......(3)

Take eq.(2).....

dy=6x.dt

Put value of x from eq.(3)--

dy=6(3t).dt

dy=18t.dt

Integrate both sides,we get-

y=9t^2

Value of t from eq.(3) ..

t=x/3

y=9(x/3)^2

y=x^2

Answer 2

Answer:

To solve this question you need to know the concept of projectile and how we find out the angle formed by a projectile.

We should also know how to do integration.

$y = {x}^{2}$