PPT-Momentum and Impulse Chapter 9

What factors affected how fast objects move after a collision Think of your lab Section 1 Momentum and Impulse Linear Momentum Momentum is defined as mass times velocity Momentum is represented by the symbol p and is a . Lots of fun!. Win . valuable prizes!. 1.The reason padded dashboards are used in cars is that they . look nice and feel good. . decrease the impulse in a collision. . increase the force of impact in a collision. . We will now quantify exactly how it hits the fan.. Momentum. Momentum = product of mass X velocity. Symbol for momentum is “p” (don’t ask me why). So, p = . mv. Momentum is also a vector and points in the direction of velocity. Chapter 7. 7.1 The Impulse-Momentum Theorem. This section deals with time-varying forces affecting the motion of objects. . The effects of these forces will be discussed using the concepts of . i. mpulse and linear momentum.. - Class . 14. Today:. Momentum and Impulse. Conservation of Momentum. Collisions, Explosions. Pre-class Reading Quiz. (Chapter. 9). Last day I asked at the end of class:. Consider . a car accident in which a car, initially traveling at 50 km/hr, collides with a large, massive bridge support.. https://. www.youtube.com/watch?v=hTZI-kpppuw. A truck rolling down a hill has more momentum than a roller skate with the same speed. But if the truck is at rest and the roller skate moves, then the skate has more momentum. Moving objects can have a large momentum if it has a large mass, a high speed or both.. Pg. 222- 227. Momentum & Impulse. The driver of this race car walked away from the car without a scratch. Luck had little to do with this fortunate outcome though – a practical application of Newton’s laws of motion by the engineers who designed the car and its safety equipment protected the driver from injury. Have you ever wondered…. How a tae kwon do expert can break a stack of cement blocks?. Why falling on a cement floor hurts more than falling on the grass?. Why a follow through is important in golf, baseball or boxing?. Excerpts . from . Chapters 9 and 11. Impulse and Momentum. Newton’s . 2nd. Law of motion can be rewritten by using the definition of . acceleration. as the change in . velocity. over the change in time.. 9. Kinetics. 2. Projekt: Cizí . jazyky v . kinantropologii. - . CZ.1.07/2.2.00/15.0199. Daniel . Jandačka. , PhD.. Impulse of Force. Impulse of force . is the product of the resultant force . Σ. (Linear) Momentum, p. ● . is mass times velocity. . . vector. !. . ● . . (p) = kg m/s. ► . a 1 kg object moving at 1000 m/s has the same momentum as a 1000 kg object moving at 1 m/s (p = 1000 kg m/s). AP Physics 1. M. Dimler. What to Expect from this Unit. Momentum. Impulse. Impulse-Momentum Theorem. Conservation of Momentum. Collisions (Elastic, Inelastic, Perfectly Inelastic, and Explosion). Elastic Collisions-Conservation of KE. … to change equilibrium states!. We have seen that…. …. equilibrium . is a. self-sustained state. ;. We have seen that…. … equilibrium is a self-sustained state;. …. objects in equilibrium . Physics 101 Today -- Chapter 6: Momentum 2 nd Homework due tomorrow Momentum = “inertia in motion” Specifically, momentum = mass x velocity = m v Eg. Just as a truck and a roller skate have different inertia, when they are moving, they (generally) have different momenta. You can calculate the momentum of a particle and the impulse of a force. The momentum of a body of mass . m. which is moving with velocity . v. is given by . mv. If the mass is in kg and the velocity is in ms.