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(2)What is needed to make things move?
(3) Work is done only when a ________ moves an object over a disatnce.
(4)Complete the following sentence.When opposing forces are balanced,_____________.
(5)Complete the following sentence.When the forces are unblanced,movement occurs_____________.
(6) The force required to make things move may be supplied by our_______________
(7)What is Gravity ?
(8) Which statement is correct?
(9)What is weight?
(10) Friction is _________________________________