Question

You are marooned on a frictionless horizontal plane and cannot exert any horizontal force by pushing against the surface. How can we get off
A. By jumping
B. By rolling your body on the surface
C. By splitting or sneezing or throwing any object
D. By throwing an object in the opposite direction

Answer 1

The collision occurs between the two rigid bodies. Between the two spheres, the Elastic head-on collision occurs. The metal appears to be the force of attraction, known as adhesion which is the reason for friction between the two metals.

Complete step by step solution:
The frictional force is defined by the following formula -
So, $f = \mu N$
$\mu$ is the friction coefficient
$N$ is normal force
$f$ is a friction force
The coefficient of friction is dimensionless it has a different value for static friction and kinetic friction
The Normal reaction is equal and opposite to the force exerted by an external force on the surface, perpendicular to the surface, or the perpendicular component of the external force.
when no external force is acting on the person, then the linear momentum of the system is conserved.
Finally, Hence by spitting or sneezing or throwing any object in the forward direction is the correct answer here, the person can get off the frictionless horizontal plane

Note:
Frictional forces are important; they also present a great measure of opposition to the motion. The important reason for friction between metals seems to be the forces of attraction, which is called adhesion. The friction is the resistance of a motion.