Combining forces: Pulling down and pushing up, forces acting in opposite directions, forces acting in the same direction.
Reviews how forces combine and how to calculate the combined force when forces work in the same or opposite directions.
Discover the physics behind the skateboarding trick called the ollie and how the skater combines forces to do the trick.
Learn what forces are involved in the game of tug of war and how the game illustrates Newton's first law of motion.
Discover how to find the terminal velocity of a penny dropped from a skyscraper and whether the penny will be traveling fast enough by the time it reaches the ground to damage materials or harm people.