A mass of 8 kg lies on a horizontal, frictionless floor. A force of 72 Newtons pushes to the left (negative x direction) with a force of 72 Newtons. Another force of unknown magnitude pushes the mass in a direction of 21.4 degrees above the positive x axis. The mass is originally at rest before these forces are applied and 2.4 seconds after the forces have been applied, the mass has moved to the left a distance of 11.1 meters. What is the magnitude of the unknown force in Newtons?

its still on the horizontal perpendicular to the x-axis
PLEASE PLEASE PLEASE HELP ME SOLVE !!!!=/

asked by Ashley

13 years ago

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See 10-5-11,12:12am post.

answered by Henry

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A mass of 8 kg lies on a horizontal, frictionless floor. A force of 72 Newtons pushes to the left (negative x direction) with a force of 72 Newtons. Another force of unknown magnitude pushes the mass in a direction of 21.4 degrees above the positive x axis. The mass is originally at rest before these forces are applied and 2.4 seconds after the forces have been applied, the mass has moved to the left a distance of 11.1 meters. What is the magnitude of the unknown force in Newtons?  
its still on the horizontal perpendicular to the x-axis
PLEASE PLEASE PLEASE HELP ME SOLVE !!!!=/

Henry · Answer

See 10-5-11,12:12am post.