What are the two kinds of forces?

______________________ is a type of force that keeps objects in motion or slows them down.

A push or pull of an object is called __________________.

_____________________ is a force that tries to pull two objects together.

The ability to do work is called ___________________.

Which of these would take the most force to lift?

Which force is shown in the picture?

Which force is shown in the picture?

What type of simple machine has a ramp that makes it easier for a heavy object to be moved up or down?

This picture shows an example of what type simple machine?

A seesaw is an example of what type of simple machine?

A bicycle is an example of a _________________.

The ______________ is a flat surface that is raised so one end is higher than the other.

The ____________ consists of a rod attached to a wheel, and makes it easier to move or turn things. A door knob is an example of this simple machine.

This simple machine has a stiff bar that moves about a fixed point, called a fulcrum.

What are two types of pulleys?

A pulley contain a rope and a wheel. It helps us to move thing easier.

Which picture below shows a pulley?

Staircase is a machine? What type of this machine?

Identify the type of pulley

A load of 50 newtons is lifted with this pulley. What is the effort required to do this work?