More physics help! Thanks!?

Question

1) You push a block up a ramp with friction. The block is moving at constant speed.
-The force you push with is greater than the force of kinetic friction.
-The force you push with is less than the force of kinetic friction.
-The force you push with is equal to the force of kinetic friction.
-Kinetic friction is not the important friction in this case, static friction is.
2) As you ride on a loop to loop in a roller coaster, select all the forces that might be acting on you at the top of the loop
(select ALL that are correct)
force down due to gravity
force down from the seat on you
force up on you from the straps holding you in place
centripetal force on you that is down

Answer 1

1) of course the first option is true unless the block would have rolled downwards. As u push the block upwards with a force say P, the sum of the component of its own wt(say W) & kinetic friction (say , F)becomes just equal to P(so that it does not acquire any accln)

=> P = F+W [ all in vector notation]
now, as W>0
=> P>F

2)
option 1 is correct.
2 is also correct[ refer newton's 3rd law]
3 is correct [ cause otherwise all the forces will be downwards & so their will be no force to hold u in ur position]
4 is correct.

Answer 2

(1)
- The force you push with is greater than the force of kinetic friction (because you are actually pushing against the force of gravity and kinetic friction is only a small part of the force opposing you)

(2)
force down due to gravity - Yes
force down from the seat on you - Yes
force up on you from the straps holding you in place - Not really
centripetal force on you that is down - Yes, well actually this is the same as the force down from the seat on you

AND there is your previous acceleration (previously due to gravity) and your current velocity upwards which the centripetal force has been curving about into an arc