Homework Help: physics 111

Posted by blake on Friday, October 15, 2010 at 1:11pm.

A block of mass 2.50 kg is pushed 2.80 m along a frictionless horizontal table by a constant 10.0 N force directed 25.0° below the horizontal.

1) what's the work done by the applied force? in joules
2)whats the work done by the normal force exerted by the table? in joules

im completely lost on this problem, any help would be appreciated

physics 111 - ashley, Tuesday, November 16, 2010 at 10:03pm
1) distanceX(ForcepushXcos25)
2) no work - no force in direction of motion
3) no work - no force in direction of motion
4) same as number 1 because table is frictionless and horizontal

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