gotpink74 said:
Why sure. Like when you hit the brakes, the car is moving forward in a positive direction, but the acceleration is in the negative direction, with the braking force acting in the negative direction to slow the car down. If you then hit the gas pedal, the car speeds up again and the acceleration is positive.gotpink74 said:
Yes, you are quite rightgotpink74 said:
, but don't forget the units and round off the answer to say F = -1600 N.Newton's Second Law of Motion states that the acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass. In simpler terms, the greater the force applied to an object, the greater its acceleration will be, and the more mass the object has, the less it will accelerate.
The net force on an object can be calculated by adding all of the individual forces acting on the object. This can be done by using vector addition, where the direction and magnitude of each force are taken into account. The resulting sum is the net force on the object.
According to Newton's Second Law, force, mass, and acceleration are all related. As the force on an object increases, its acceleration also increases, but as the mass of the object increases, its acceleration decreases. This means that force and acceleration are directly proportional, while mass and acceleration are inversely proportional.
Mass and weight are often used interchangeably, but they are actually two different concepts. Mass is a measure of the amount of matter in an object, while weight is a measure of the force of gravity acting on an object. Mass is measured in kilograms, while weight is measured in newtons.
Newton's Second Law has many real-life applications, such as explaining the motion of objects on ramps, the movement of projectiles, and the operation of vehicles. It is also the basis for many engineering designs, such as the design of bridges and buildings, as it helps in determining the forces acting on these structures.