Force

When we compress or streched a spring will have_________________________.

_____________________ is produce when two objects or surface rub against .

Most vehicles are built with a strenghtlines shape to reduce___________________ as much as possible.

Who discovered the gravity?

_________________Is the pulling and pushing forces of magnets.

Mass is the amount of substance in an object

• True

• False

Weight is the pulling force of the earth gravity on an objects.

• False

• True

The unit of weight is Newton.

• True

• False

When likes poles of magnets face each other , they repel each other.

• True

• False

When unlike poles of magnets face each other , they attract each other.

• True

• False