Answer:
Good question to ask in physics, sir maam
X rays because to see your bones
(a) The velocity of the object on the x-axis is 6 m/s, while on the y-axis is 2 m/s, so the magnitude of its velocity is the resultant of the velocities on the two axes:

And so, the kinetic energy of the object is

(b) The new velocity is 8.00 m/s on the x-axis and 4.00 m/s on the y-axis, so the magnitude of the new velocity is

And so the new kinetic energy is

So, the work done on the object is the variation of kinetic energy of the object:
Answer:
for 4.567 I can't tell if it x
or x
so:
answer using x
= 0.0000644697N
answer using x
= 0.00644697
Explanation:
use equation F = GMm/