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May 25, 2013

# Homework Help: physics

Posted by jessie on Sunday, October 16, 2011 at 2:14am.

what force is needed to accelerate at child on a sled at 1.4 meters per second square (total mass 55 kilo gram)

• physics - Henry, Monday, October 17, 2011 at 5:30am

F = ma = 55 * 1.4 = 77N.

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