Contact Forces

Front

What are contact forces?

Back

Contact forces are forces that occur when two objects are in physical contact with each other. Examples include friction, tension, and normal force.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object. It occurs when two surfaces rub against each other.

Front

What is the elastic limit?

Back

The elastic limit is the maximum extent to which a material can be stretched or compressed without permanently deforming.

Front

What happens to an object when it exceeds its elastic limit?

Back

When an object exceeds its elastic limit, it reaches its breaking point and cannot return to its original shape.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion. It depends on the mass and speed of the object.

Front

How does speed affect kinetic energy?

Back

Increasing an object's speed increases its kinetic energy, as kinetic energy is proportional to the square of the speed.

Front

What is gravity?

Back

Gravity is a force that attracts two bodies towards each other, commonly experienced as the force that pulls objects towards the Earth.

Front

What is tension?

Back

Tension is a force that is transmitted through a string, rope, or cable when it is pulled tight by forces acting from opposite ends.

Front

What is normal force?

Back

Normal force is the support force exerted upon an object that is in contact with a surface, acting perpendicular to the surface.

Front

What is air resistance?

Back

Air resistance is a type of friction that acts against the motion of an object moving through the air.