A box with a mass of 12.44 kg is pulled along a horizontal surface, with no friction between the box and the surface. The magnitude of the force pulling the box is 9.99 N.

What is the magnitude of the acceleration of the box?


An object is moving forward with a constant velocity. What statement about this object MUST be true?

No forces are acting on the object.

The acceleration of the object is in the forward direction.

The net force on the object is in the forward direction.

The net force on the object is zero.

A box of mass 5.48 kg box slides down an inclined plane that makes an angle of 20.3° with the horizontal. The coefficient of kinetic friction between the block and the inclined plane is 0.17. What is the magnitude of the box’s acceleration?


Record your numerical answer below, assuming three significant figures.

On earth, a block sitting on a frictionless, horizontal table accelerates at 11.67 m/s2 when a 25-N horizontal force is applied to it. The block and table are then moved to the moon where the acceleration due to gravity is 1.66 m/s2.

Find the magnitude of the block’s weight ?? ?w?mon the moon.

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