An 8.0newton block is accelerating down a frictionless ramo inclined at 15 degrees to the horizontal. what is the magnitude of the net force causing the blocks acceleration? 1. 0n 2. 2.1n 3. 7.7n 4. 8.0n

Given that:

     Force (F) = 8 N,

     inclination of ramp (θ) =15°

determine magnitude of net force (Fnet) = ?

                   Fx =8 cosθ

                        = 8 × cos 15

                        = 7.72 N ,

                    Fy = F sinθ

                         = 8 × sin 15

                         = 2.07 N ,

                Net force (Fnet) = sq.root [ (Fx)² + (Fy)²]

                                           = sq.root [(7.72)² + (2.07)²]

                                            = 8 N .

Magnitude of net force is 8 N

the electric field is a “force field” around a charged object that illustrates the direction the electric force would push an imaginary 

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )