Physics

• The SI unit of force is the newton (N).
• A force can be calculated using F = ma, where m is mass and a is acceleration.
• Newtons second law states that the rate at which an object's momentum changes is directly proportional to the resultant force acting on it.
• Newtons second law states that the rate at which an object's momentum changes is equal to the net external force acting on it.
• Momentum is defined as p=mv, where m is mass and v is velocity.
• Work done by a constant force is equal to the product of the magnitude of the force and the distance moved in the direction of the force.
• Impulse is defined as change in momentum over time, or impulse = change in momentum.
• Energy is defined as the ability to do work or transfer heat.
• Kinetic energy is the energy possessed by an object due to its motion.
• Inertia is the tendency of an object to resist any change in its state of motion or rest.
• Power is defined as P=Fvcosθ, where F is the force applied, v is the speed of the object, and cosθ represents the component of motion along the line of action of the force.
• When two forces act on an object, they cause different effects depending on their relative magnitudes and directions.
• An unbalanced force causes an object to accelerate.
• Energy is defined as energy transferred/energy stored.
• The equation for calculating work done when a force acts through a displacement is W = Fd cosθ, where d is the displacement and θ is the angle between the force vector and the displacement vector.
• Potential energy is stored energy within an object.
• The equation for kinetic energy is KE = 1/2 x mv^2
• When a force acts through a displacement, the work done depends on both the size of the force and the length of the path along which it acts.
• Kinetic energy is defined as KE=1/2mv^2.
• Potential energy is the stored energy within an object due to its position or configuration.
• The equation for power can be simplified to P=Fv if the angle between the force and velocity vectors is zero (θ=0).
• Potential energy is stored energy that can be converted into other forms of energy.
• The equation for potential energy is PE = mgx
• Gravitational potential energy is the energy stored in an object due to its position relative to Earth's surface.
• If a force acts perpendicularly to the displacement, no work is done because there is no component of the force parallel to the displacement.
• The resultant force can be calculated using vector addition.
• Average power is calculated using the formula Pavg=(work done)/(time taken), while instantaneous power is calculated using the formula Pinst=dW/dt.
• The equation for kinetic energy (KE) is KE = 1/2mv^2.
• A balanced force does not result in any net effect on the object's motion.
• If the resultant force is zero, there will be no acceleration and the object will remain at rest or continue moving with constant velocity.
• A balanced force system occurs when all forces acting on an object are equal and opposite, resulting in no net force and no acceleration.
• Mechanical advantage refers to the ratio of output force to input force in a machine.
• The direction of the resultant force can be found using vector addition.
• Forces acting at right angles cancel out when added together.
• Average power can be calculated using the formula average power = work done / time taken.
• Work done is equal to the product of the force acting on an object and the distance it moves in that direction.
• Work done by a constant force acting at right angles to the direction of motion is zero.
• Average power can be calculated using the formula Pavg = (work done)/(time taken).
• Work-energy theorem states that the net work done on an object equals the change in kinetic energy of the object.
• Conservation of energy principle states that energy cannot be created or destroyed but can only be transformed from one form to another.