Fill in the blanks with suitable words:
(Push, force, pull, speed, gravitational force, direction, Muscular)
1. A __________ is needed to make a stationary object move.
2. The force applied with the help of muscle is called _________ force.
3. __________ and __________ are known as forces.
4. The reason for the fruits to fall from the tree is ________.
5. Force changes the _________ and ________.