We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byHelen Buffum
Modified over 4 years ago
© Boardworks Ltd 2003 Force mass and acceleration
© Boardworks Ltd 2003 Force mass and acceleration Recall and use the relation between force, mass and acceleration (including the direction). Describe, qualitatively, motion in a curved path due to a perpendicular force.
© Boardworks Ltd 2003 How are mass, force and acceleration related? Two masses of 1 kg and 4 kg are both subject to the same force, which one will accelerate the fastest? The lower the mass, the greater the acceleration for a specific force. This is why Grand Prix cars get faster as they use up their fuel. Less fuel, means less mass, less mass means greater acceleration.
© Boardworks Ltd 2003 F=ma We can express the relationship between force, mass and acceleration using the equation: Force = mass x acceleration F =ma Force measured in Newtons (N) Mass measured in kilograms (kg) Acceleration measured in metres per second per second (ms -2 )
© Boardworks Ltd 2003 Formula triangles F m aa x Formula triangles help you to rearrange formula. The triangle for the f=ma formula is shown below: Whatever quantity you are trying to find, cover it up and it will leave you with the calculation required. So if you were trying to find mass, m….. …you would cover m up… …and you are left with the sum… m = F a
© Boardworks Ltd 2003 Force calculations: 1.What force will make a mass of 4 kg accelerate at 5 ms -2 ? 2.A force of 50N acts on a 2 kg mass. What will be the acceleration of the mass? 3.A force of 2 000N accelerates a car at 2.5 ms -2. What is the mass of the car? Force = 20 N Acceleration = 25 ms -2 Mass = 800 kg
© Boardworks Ltd 2003 Force questions: 1.Label the forces acting upon a moving bike. 2.Fill in the table: A > (C+D)A =(C+D) A < (C+D) Bike accelerating Bike at steady speed Bike decelerating A B C D E A - Thrust B - Reaction C – Air resistance D - Friction E - Gravity
© Boardworks Ltd 2003 Moving in circles Watch the bucket demonstration Draw a force diagram of: The bucket The water
© Boardworks Ltd 2003 Questions (Assuming the bucket travels at a constant speed) What is the change in speed? What is the change in velocity? What is the definition of velocity? What is the definition of acceleration? Is the bucket accelerating?
© Boardworks Ltd 2003 Applet http://phet.colorado.edu/en/simulation/ motion-2dhttp://phet.colorado.edu/en/simulation/ motion-2d
© Boardworks Ltd 2003 Notes F=ma (acceleration is always in the direction of the force) Any change in velocity is an acceleration……. …… including changes in direction. An object moving in a circle at constant speed is accelerating.
IGCSE Electricity – Resistance
Pressure. Pressure in solids Core Relate (without calculation) pressure to force and area, using appropriate examples Extension Recall and use the equation.
The Law of Inertia. Objects at rest remain at rest unless acted upon by an outside force. Objects in motion will remain in motion unless acted upon by.
Air resistance is a form of friction that acts to slow down any object moving in the air. Air resistance is a force that gets larger as an object moves.
KS4 Forces – Speed and Acceleration
Force and motion Forces acting together
Do Now: 1. Draw a free body diagram (all the forces) acting on a water skier being pulled by a boat. 2. What is the net force acting on this object?
Uniform Circular Motion. Answer Me!!!! Newton’s Laws state that an object in motion will stay at the same velocity until acted upon by an unbalanced.
Physics 151 Week 4 Day 2 Topics –Motion Graphs –Area under a curve (velocity to position) –Constant acceleration equations.
Week. Student will: centripetal accelerationcentripetal force Solve problems involving centripetal acceleration and centripetal force.
Motions and Forces. How is speed calculated? The speed of an object can be calculated using this equation: distance travelled time taken speed =
Speed and Acceleration
1 of 46© Boardworks Ltd of 46© Boardworks Ltd 2007.
PHYSICS Revision Lesson 5 Velocity and Acceleration Distance-Time and Speed-Time Graphs.
1 of 10© Boardworks Ltd of 10© Boardworks Ltd 2009 Kinetic energy is the energy an object has because it is moving. What is kinetic energy? The.
Do Now: Do Now: 1. What is the formula to calculate weight? 1. What is the formula to calculate weight? 2. A. Draw the resultant force and calculate it.
CIRCULAR MOTION o Clyde Ruemm Joshua Aguillon o Kyna Desiree Bucio o Niczie Flor Laid o Danniela Marie Mozo o Jaynne Lorraine Love Paular.
Boardworks GCSE Additional Science: Physics Laws of Motion
Chapter Four Notes: Newton’s Second Law of Motion – Linear Motion.
Force and Motion December 2014 Benchmark Review. Formula Triangle F=ma F=ma m=F/a a=F/m Use your finger to cover the value you are looking for. If the.
© 2018 SlidePlayer.com Inc. All rights reserved.