Plzzz helppp I’ll mean a lot it’s for my test 50 points!! Plzzzz helppp
1 answer:
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The kinetic energy of an object is given by:
where
K is the kinetic energy
m is the mass of the object
v is its velocity.
The comet in our problem has a mass of
and a velocity of 
, so its kinetic energy is:
where
K is the kinetic energy
m is the mass of the object
v is its velocity.
The comet in our problem has a mass of
F = normal force by each board on each side
W = weight of the board in between acting in down direction = 95.5 N
f = frictional force in upward direction by each board
= coefficient of friction = 0.663
Using equilibrium of force in Upward direction
f + f = W
f = W/2
f = 95.5/2 = 47.75 N
frictional force is given as
f = F
47.75 = (0.663) F
F = 72.02 N
