What is everything that has mass and occupies space called?

What is the effect of pressure of a human body on sand ?

Weight and mass of an object are defined with Newton's laws of motion. Which among the following is true ?

The length of a simple pendulum is increased four times to its previous value while the mass is doubled. What is the ratio of the new and previous time period of the pendulum?

There is a ball of mass 320 g. It has 625 J potential energy when released freely from a height. The speed with which it will hit the ground is

Which one of the following statements about speed and velocity is correct?