Ch+3+Sec+5+KirnumB

**Investigate**

 //Objective:// A small sports car hits a heavy truck in a collision. What factors determine the outcome for the passengers of the two vehicles? Which driver will sustain worse injuries? Why?

 How fast each is going at the time of the collision and the mass of each vehicle. The driver in the small car will sustain worse injuries because the small is not as strong as the strong as the truck and is easier to move.

 //Materials:// List any materials used and draw a labeled diagram of your set-up (alternatively, include a snapshot or video).

 Ramp  2 500g masses  Two carts

//Procedure: //


 * 1) Place a cart on the middle of the track with the spring to the right. Call this the "target cart."(blue) Place a second identical cart on the right end of the track. Call this the "Bullet cart".
 * 2) Push the bullet cart very gently towards the target cart so that they collide, with the spring between them.
 * 3) Repeat step 2 several times, giving the bullet cart a bigger push each time. Record your observations.
 * 4) Add 500-g to each cart and repeat the process. Record your observations and compare the results to the first set of collisions.
 * 5) Remove the mass from the target cart and repeat the above steps.
 * 6) Add the mass to the target cart and remove the mass from the bullet cart, and repeat.
 * 7) Get the "Mystery" cart from your teacher. Determine the relative mass of the cart by putting it through a sequence of collisions.

<span style="font-family: Arial,Helvetica,sans-serif;">//Data and observations:// Add more columns/row as needed.


 * __<span style="font-family: Arial,Helvetica,sans-serif;">Bullet Cart __ || __<span style="font-family: Arial,Helvetica,sans-serif;">Target Cart __ || <span style="font-family: Arial,Helvetica,sans-serif;">A__pplied force__ || <span style="font-family: Arial,Helvetica,sans-serif;">Description and Observations ||
 * <span style="font-family: Arial,Helvetica,sans-serif;">750g || <span style="font-family: Arial,Helvetica,sans-serif;">750g || <span style="font-family: Arial,Helvetica,sans-serif;">Small || <span style="font-family: Arial,Helvetica,sans-serif;">The bullet cart pushed the target cart a little then it stopped ||
 * <span style="font-family: Arial,Helvetica,sans-serif;">750g || <span style="font-family: Arial,Helvetica,sans-serif;">750g || <span style="font-family: Arial,Helvetica,sans-serif;">Little more || <span style="font-family: Arial,Helvetica,sans-serif;">The target cart traveled further then before ||
 * <span style="font-family: Arial,Helvetica,sans-serif;">750g || <span style="font-family: Arial,Helvetica,sans-serif;">750g || <span style="font-family: Arial,Helvetica,sans-serif;">Medium || <span style="font-family: Arial,Helvetica,sans-serif;">The target cart went fast and far while the bullet cart stopped movie on impact ||
 * <span style="font-family: Arial,Helvetica,sans-serif;">750g || <span style="font-family: Arial,Helvetica,sans-serif;">750g || <span style="font-family: Arial,Helvetica,sans-serif;">Hard || <span style="font-family: Arial,Helvetica,sans-serif;">The target cart went fast and far while the bullet cart stopped movie on impact ||
 * <span style="font-family: Arial,Helvetica,sans-serif;">1250g || <span style="font-family: Arial,Helvetica,sans-serif;">1250g || <span style="font-family: Arial,Helvetica,sans-serif;">Light || <span style="font-family: Arial,Helvetica,sans-serif;">With the same light push as the 750g carts the target cart moved farther. ||
 * <span style="font-family: Arial,Helvetica,sans-serif;">1250g || <span style="font-family: Arial,Helvetica,sans-serif;">1250g || <span style="font-family: Arial,Helvetica,sans-serif;">Medium || <span style="font-family: Arial,Helvetica,sans-serif;">With the same medium push as the 750g carts the target cart moved farther. ||
 * <span style="font-family: Arial,Helvetica,sans-serif;">1250g || <span style="font-family: Arial,Helvetica,sans-serif;">1250g || <span style="font-family: Arial,Helvetica,sans-serif;">Hard || <span style="font-family: Arial,Helvetica,sans-serif;">With the same hard push as the 750g carts the target cart moved farther. It also went father because after hitting the stop point the target cart bounced back ||
 * <span style="font-family: Arial,Helvetica,sans-serif;">1250g || <span style="font-family: Arial,Helvetica,sans-serif;">750g || <span style="font-family: Arial,Helvetica,sans-serif;">Light || <span style="font-family: Arial,Helvetica,sans-serif;">The target cart went a lot further then it has before with just a light push ||
 * <span style="font-family: Arial,Helvetica,sans-serif;">1250g || <span style="font-family: Arial,Helvetica,sans-serif;">750g || <span style="font-family: Arial,Helvetica,sans-serif;">Medium || <span style="font-family: Arial,Helvetica,sans-serif;">The target cart went further and faster then before with a medium push and the bullet cart kept moving as well ||
 * <span style="font-family: Arial,Helvetica,sans-serif;">1250g || <span style="font-family: Arial,Helvetica,sans-serif;">750g || <span style="font-family: Arial,Helvetica,sans-serif;">Hard || <span style="font-family: Arial,Helvetica,sans-serif;">The target cart went further and faster then any of the before hard pushes. The bullet cart also did not stop moving ||
 * <span style="font-family: Arial,Helvetica,sans-serif;">750g || <span style="font-family: Arial,Helvetica,sans-serif;">1250g || <span style="font-family: Arial,Helvetica,sans-serif;">Light || <span style="font-family: Arial,Helvetica,sans-serif;">The target cart moved and the bullet cart followed. The bullet cart went back then forward again ||
 * <span style="font-family: Arial,Helvetica,sans-serif;">750g || <span style="font-family: Arial,Helvetica,sans-serif;">1250g || <span style="font-family: Arial,Helvetica,sans-serif;">Medium || <span style="font-family: Arial,Helvetica,sans-serif;">The target cart did not traveled as far and the bullet cart went backwards ||
 * <span style="font-family: Arial,Helvetica,sans-serif;">750g || <span style="font-family: Arial,Helvetica,sans-serif;">1250g || <span style="font-family: Arial,Helvetica,sans-serif;">Hard || <span style="font-family: Arial,Helvetica,sans-serif;">The target cart moved far but went slower and the bullet cart moved backward after hitting the target. ||
 * <span style="font-family: Arial,Helvetica,sans-serif;">Mystery || <span style="font-family: Arial,Helvetica,sans-serif;">1250g || <span style="font-family: Arial,Helvetica,sans-serif;">Light || <span style="font-family: Arial,Helvetica,sans-serif;">The target cart did not move far and the mystery cart moved back a small bit ||
 * <span style="font-family: Arial,Helvetica,sans-serif;">Mystery || <span style="font-family: Arial,Helvetica,sans-serif;">1250g || <span style="font-family: Arial,Helvetica,sans-serif;">Hard || <span style="font-family: Arial,Helvetica,sans-serif;">The target cart moved far and fast and the Mystery did not move after impact. ||
 * <span style="font-family: Arial,Helvetica,sans-serif;">1250g || <span style="font-family: Arial,Helvetica,sans-serif;">Mystery || <span style="font-family: Arial,Helvetica,sans-serif;">Light || <span style="font-family: Arial,Helvetica,sans-serif;">The mystery cart moves as far but slowly and the bullet cart stops moving ||
 * <span style="font-family: Arial,Helvetica,sans-serif;">1250g || <span style="font-family: Arial,Helvetica,sans-serif;">Mystery || <span style="font-family: Arial,Helvetica,sans-serif;">Hard || <span style="font-family: Arial,Helvetica,sans-serif;">The mystery cart moved far but fast and the bullet stopped ||
 * <span style="font-family: Arial,Helvetica,sans-serif;">750g || <span style="font-family: Arial,Helvetica,sans-serif;">Mystery || <span style="font-family: Arial,Helvetica,sans-serif;">Light || <span style="font-family: Arial,Helvetica,sans-serif;">The mystery cart moves as far but slowly and the bullet cart stops moving ||


 * Questions:**
 * 1) What is a real-life collision that the collisions in this investigation could represent?
 * A rear-end collision
 * 1) How well did observing collisions enable you to compare the masses of the carts in the last step?
 * Since the cart did not move very much we concluded that the masses were very similar, if not the same.
 * OUR CARTS WERE THE 250 GRAM ONES (BLUE AND RED) NOT SILVER
 * 1) What happened after the collision as the masses changed?
 * When the first cart gains mass, the cart it hit into sped up.
 * 1) Define the term momentum.
 * momentum: the product of the mass and the velocity of an object;momentum is a vector quantity
 * 1) Which object has greater momentum, a butterfly traveling at 16 km/h or an eagle traveling at the same speed?
 * A butterfly
 * 1) How does the transfer of momentum occur?
 * In a collision
 * 1) Use momentum to describe what would happen if a skaterboarder was hit by a car.
 * If a skateboarder, the force of the collision on the skateboarder would damage him much more then the car.

· Based on the relative amounts of momentum, what is the outcome of a head-on collision between a heavy truck and a small sports car if both have the same speed? · Explain at least 1 cause of experimental error. Be sure you describe a specific reason. · How would you improve the results of this lab? (In other words, what would you change about the materials or procedure to eliminate or reduce the experimental error you describe above?)
 * Conclusion:**
 * If one has a mass of 1000 kg and travels at 20 m/s, their momentum is 20,000. A 10,000 kg truck traveling at the same speed has a momentum of 200,000. In a head on collision, their momentum is 220,000
 * One cause of experimental error would be if you didn't chance the speed in which the first cart traveled.
 * I would improve the results of this lab by using a stop watch to see the difference of speed.

1. They reach the same speed 4. They have more momentum and are harder to push down 5. Their momentum 6. 1 m/s
 * Physics To go**