How Forces Affect Motion Mind Map

Force is a push or pull acting on an object, and it may change the object's speed, direction of motion, state of rest, or shape.

While answering, mention both the type of effect and the object on which force acts.

Force is measured in newton, symbol N, which is the SI unit of force.

Always write the unit as N after calculating force, and keep mass in kg and acceleration in m/s².

Balanced forces have zero net force and do not change the state of motion, while unbalanced forces have non-zero net force and can change motion.

Use the phrase 'net force is zero' for balanced forces and 'net force is non-zero' for unbalanced forces.

Newton's first law states that an object remains at rest or in uniform straight-line motion unless acted upon by an unbalanced external force.

In seat-belt questions, mention inertia of motion and sudden stopping of the vehicle.

Newton's second law states that force is equal to the rate of change of momentum; for constant mass, it is commonly used as F = ma.

Write the formula first, substitute with units, then give the answer in newton.

Newton's third law states that for every action, there is an equal and opposite reaction acting on a different body.

Always name both bodies in the action-reaction pair.

When more than one force acts on an object, their combined effect is called the net force, and it determines the change in motion.

Draw arrows before doing calculation; direction is the main clue in net-force questions.

Friction is a contact force that opposes relative motion or the tendency of relative motion between two surfaces in contact.

Mention the two surfaces and the direction of possible sliding when explaining friction.