Acceleration; F = - F A force of 21 N is applied to a 10 kg sled which experiences a small force of
friction of 3 N. What is the net force on the sled?
Your answer

18N is the net force

Explanation:

Since friction always acts in the opposite direction of an objects motion we subtract the applied force from the frictional force to get our resultant net force of 18N.

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

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