In Figure 4.7, the net external force on the 24-kg mower is stated to be 51 N. If the force of friction opposing the motion is 24 N, what force (in newtons) is the person exerting on the mower? Suppose the mower is moving at 1.5 m/s when the force F is removed. How far will the mower go before stopping?

Revelant knowledge

Net External Force on a Mower: The force external acting upon a lawn mower comprises all external forces that are acting on it in opposite directions from the path of movement. The force that is emitted by the person pulling or pushing it as well as the force generated by friction are examples of external force that are acting against the mower. The external force exerted on the mower may be positive, zero or negative.