Which statement describes how a machine can help make work easier? A. It can put out more force than the input force by decreasing the distance over which force is applied. B. It can increase the amount of work performed if the output force is in the same direction as the input force. C. It can apply a greater output force over a greater distance compared to the input force and distance. D. It can increase the distance over which output force acts by applying less output force than input force.

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. how long will the ball be in the air before it lands? how far will the football travel before it lands?

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?