**1. How can I remember the three different formulas involving speed, distance and time?**

This little triangle may help. Cover up the item you are trying to find and what is left is the calculation to do |

**2. How do I change km per hour (km/h) to metres per second (m/s) ?**

Multiply by 1000 to change the km to metres and then divide by 60 to change the hours into minutes and again by 60 to change the minutes into seconds.

**3. Are speed and acceleration the same?**

Acceleration is the rate at which the speed is changing

i.e. If the acceleration is positive the object's speed is increasing.

**4. What is the difference between speed and velocity?**

The velocity of an object incudes the direction the object is moving in whereas the speed does not.