Wednesday, November 7, 2012

Impulse Lab


Big Question: What is the relationship between impulse, force and time in a collision?

To answer the big question, we crashed the car into a force-probe attatched to the ring stand. We measured  car's velocity and all of it movement before the collision and then after the collision. We used metal bands to slow the collision down(slowed time down). This made it an elastic collision. 

  
Key Information:
-Impulse also equals the change in momentum; Momentum final minus momentum initial. J=Pf-Pi
-Impulse is constant when objects collide
-J=FT

Lab Conclusion: 
The Big answer is that force and time are inversely proportional. Force and time: Impulse equals force multiplied by time (J=FxT)

Real World Connection:
 When two players are running and collide, they're pads act as the metal rings to slow down time, the times it takes for the them to actually collide. It also reduces the impact of the collision.