Force and Press...

 Which of the following force doesn't change with distance?

It is better to use a sharp tipped nail than a blunt nail because :

The pressure exerted by a women wearing shoes with pointed heels is ...... than what an elephant with one foot can exert on ground :

It is easier to cut with a sharp knife than with a blunt one, This is because

Which of the following has infinite range?

Ask a friend to drive a small nail into a piece of wood placed on top of a pile of books on your head. Why doesn't this hurt you?

A box exerts a force of $$420N$$ on a floor. The bottom of the box has an area of $$0.7m^2$$. What is the pressure exerted by the box on the floor?

The same force acting on a smaller area exerts a larger pressure, and a smaller pressure on a larger area.

A force $$\displaystyle F_{1}$$ accelerates a particle from rest to a velocity v. Another $$\displaystyle F_{2}$$ decelerates the same particle from v to rest, then: