Visit Your Local PBS Station PBS Home PBS Home Programs A-Z TV Schedules Watch Video Donate Shop PBS Search PBS
Rough Science
Explore the Challenges
Solve the Web Challenge
Meet the Rough Scientists
About the TV Series
Discover More
Site Map
Explore the Challenges

The Challenge: Make fireworks

How do we propel the rocket?

One of the crucial things about making a rocket is establishing how much force the rocket needs to take off and fly far enough to explode safely. For the rocket to be propelled, we need to generate a force greater than gravity.

First, we need to understand velocity , acceleration and force.

To find out what the rocket's velocity is, this equation is used:

where v is velocity, s is distance, t is time

Acceleration from a stationary launch would be as follows:

where a is acceleration, v is velocity, t is time

The force would then be:

where F is force, m is mass, a is acceleration