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ok im doing my physics homework and we have to submit the answers online.
i keep getting these questions wrong and i only have one more try can someone please tell me how to work it?

a 2.5 kg otter starts from rest at the top of a muddy incline 94.6 cm long and slides down to the bottom in 0.50s.
What net external force acts on the otter along the incline? in units of N.

a 3.37 kg book is dropped from a height of 2.0m. The acceleration of gravity is 9.81 m/s^2.
what is its acceleration? in units of m/s^2
what is its weight? in units of N

a 2.70 kg block is in equilibrium on an incline of 23.3°
the acceleration of gravity is 9.81 m/s^2/
what is Fn of the incline on the block?
in units of N

A block with a mass of 5.8 kg is held in equilibrium on a frictionless incline of 27.0° by the horizontal force F
the acceleration of gravity is 9.81 m/s^2
what is the magnitude of F? in units of N
what is the magnitude of the normal force. in units of N

i have made diagrams of them to help me out. i was gonna post them here but its not allowed. maybe im doing the diagrams wrong>

  • physics -

    I would like to see your work.

  • physics -

    ok, but how do i put it here if
    when i try to post it it says:
    You are not allowed to post internet addresses

  • physics -

    dont post any hot links. If you have it posted on a web site, do this:

    H t t p : w w w. s p a c e s

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