Momentum and Impulse
Physics: In Motion
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Guidelines and tips
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Community
Ask the community
Ask the community for help and clear up your study doubts
University Rankings
Discover the best universities in your country according to Docsity users
Free resources
Our save-the-student-ebooks!
Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors
Momentum and Impulse in Physics: A Study Guide with Exercises, Exercises of Acting
Impulse Calculations. Impulse is calculated by the following equation. I = F • t. I = Impulse (N•s). F = force (N) t = time (s) ...
Typology: Exercises
2021/2022
1 / 40
This page cannot be seen from the preview
Don't miss anything!
Related documents
Partial preview of the text
Download Momentum and Impulse in Physics: A Study Guide with Exercises and more Exercises Acting in PDF only on Docsity!
Momentum and Impulse
Physics: In Motion
Momentum
https://www.youtube.com/watch?v=2UHS883_P
Momentum
To bring an object to a stop, we must decrease the object’s momentum to 0.
Momentum
Momentum is calculated according the the equation…
P = m• v
P = momentum (N•s or kg•m/s)
m = mass of the object (kg)
v = velocity (m/s)
∆P = m• ∆v
Momentum Calculations
What is the momentum of a 10 kg toy car moving at 5m/s?
What is the momentum of a 10 kg toy car moving at 10m/s?
How do their momentums compare?
Momentum Calculations
Calculate the momentum of cart 1 – 3.00 kg cart moving at 30 m/s North.
Calculate the momentum of cart 2 – 2.00 kg cart moving 45.0 m/s South.
Can you say their momentums are equal? Why or why not?
Conservation of Momentum
By measuring the momentum of colliding objects before and after a collision, Newton found.
The total momentum of any system is conserved.
P (total before collision) = P (total after collision)
m• v (total before collision) = m• v (total after collision)
Conservation of Momentum
Ex. If a school bus collides with a car, the total momentum before the collision is equal to the total momentum after the collision (as long as there is no net force acting on the system).
There are two types of ways the collision could
happen...
When the school bus and the car collide they can become two separate wrecks.
Momentum of bus + Momentum of Car = Momentum of bus + Momentum of car (before) (before) (after) (after) mbus1vbus1 mcar1vcar1 mbus2vbus2 mcar2vcar
Car Crashes
https://www.youtube.com/watch?v=c0tlOPorrDw
What do you Remember about Momentum?
Momentum is the quantity of motion an object has.
Momentum is calculated by the following equation:
P = m• v
Momentum Recap
Conservation of Momentum
https://www.youtube.com/watch?v=4IYDb6K5UF
Momentum Calculations
What is the final momentum, if a 4000 kg bus travelling at 80km/h crashes into a car with a mass of 1000 kg travelling at a speed of 60 km/h?