The forces acting on the body
Step-by-step explanation:
When an apple falls from tree , The forces acting are
( i ) Gravitation force acts downwards due to pull of the earth .
( ii ) The force of friction due to air acts upwards
When it rolls down the hill
( i ) The gravitational force due to earth acting downwards
( ii ) The force if friction due to surfaces in contact , acting upwards along the slope of the hill
When we slip on the floor
( i ) The horizontal forward force due to horizontal component of force of reaction by the floor .
( ii ) The frictional force acting in a backward direction , due to surfaces in contact .