The boats motor pushes water back, producing an equal and opposite force that pushes the boat forward.
I. Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it.
If there is no force against motion,applied force is zero. If there is force against motion,applied force is equal and opposite to that force.
An object at rest will stay at rest unless acted upon by an external force - newtons 1st law of motion. It will stay at rest If no force is applied. Also if equal and opposite forces are applied (balanced) to a resting object it will remain at rest also - every action has an equal and opposite reaction - newtons 3rd law of motion
If there is no force against motion,applied force is zero. If there is force against motion,applied force is equal and opposite to that force.
the law of inertia
Newtons laws of motion
Newton's first law states that an object will remain at rest or in uniform motion unless acted upon by an external force. This means that an object will not change its state of motion unless a force is applied to it.
Isaac Newton, he discovered: -Newton's First Law of motion. -Newton's Second Law of motion. -Newton's Third Law of motion.
law of inertia F=MA
Momentum.
Newton's third law of motion is that for every action there is an equal and opposite reaction. This law is also called reciprocal motion/force or "action-reaction."
Newtons law of motion comes into play here. When the brakes are applied the body of the truck will want to continue on its forward motion. The contact of the tyres with the road will try to control that forward motion.