Physics

• The second law of motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
• The law of conservation of energy states that energy cannot be created nor destroyed but only transformed into different forms.
• Mass is a measure of how much matter an object contains and is measured in kilograms (kg).
• Inertia refers to the tendency of an object at rest to remain at rest or an object moving with constant velocity to continue doing so unless acted upon by a resultant force.
• Newton's third law of motion states that when two objects interact, they exert equal and opposite forces on each other.
• For every action, there is an equal and opposite reaction.
• An object at rest stays at rest unless acted upon by an unbalanced force.
• Acceleration = change in velocity / time taken
• A body in motion continues in motion with the same speed and direction unless acted upon by an external force.
• An example of a vector quantity is displacement, which can have positive or negative values depending on the direction.
• Acceleration is the rate of change of velocity.
• Weight is the gravitational force acting on an object due to gravity.
• A vector quantity has both magnitude and direction, while a scalar quantity only has magnitude.
• Newton's first law of motion states that if there are no forces acting on an object, then the object will either stay still or move at a constant speed in a straight line.
• Force is defined as a push or pull which causes an object to change its state of motion or deform its shape.
• Acceleration is the rate of change of velocity and can be calculated using the formula v = u + at, where v is final velocity, u is initial velocity, t is time taken, and a is acceleration.
• Acceleration is defined as the rate of change of velocity, which can be calculated using the formula v = u + at.
• Average speed = total distance travelled / total time taken
• The equation F=ma can be used to calculate any unknown value if all other values are known.
• The accelerating force (F) acting on an object equals its mass times its acceleration (a).
• Force can be calculated using F=ma.
• Mass is measured in kilograms (kg), while weight is measured in newtons (N).
• Instantaneous velocity refers to the average velocity over a very short period of time.
• The equation for acceleration is a = vf - vi / t.
• Inertia is the tendency of an object to remain at rest or continue moving at constant velocity.
• Newton's first law states that if no resultant forces act on an object, it will either be stationary or move at a constant velocity.
• The formula for weight (W) is W=mg, where m is mass and g is acceleration due to gravity.
• Gravity is the force that pulls objects towards the center of Earth.
• Inertia is the tendency of an object at rest to remain at rest and an object in motion to continue moving at constant velocity.
• Inertia refers to the tendency of an object to resist changes in its state of rest or uniform motion.
• The SI unit for acceleration is meters per second squared (m/s^2).
• The equation for acceleration is a = v/t - vi/t, where t is the time taken and vi and v are initial and final velocities respectively.
• There are four types of forces: contact forces, non-contact forces, frictional forces, and spring forces.
• Contact forces occur when two objects touch each other, such as tension, compression, normal contact, and friction.