Physics unit 2 FORCES 0.0 / 5 ? PhysicsForcesGCSEAQA Created by: Lucycp101Created on: 29-11-15 15:41 How do you calculate speed? Speed = distance/time 1 of 18 What is momentum? The quantity of motion an object has 2 of 18 What is the momentum equation? Momentum = velocity x mass 3 of 18 What are velocity,mass and momentum's units? momentum = kg m/s Mass = kg Velocity = m/s 4 of 18 What is the law of momentum? The total momentum before an event = The total momentum after the event 5 of 18 What happens if the direction is going a different way? (left) We add a negative charge to the answer 6 of 18 What is the thinking distance? How far the car travels before the driver reacts 7 of 18 What is the breaking distance? How far the car travels when the breaks are applied 8 of 18 What is the stopping distance? The breaking distance + The stopping distance 9 of 18 Name 4 factors affecting the reaction time Tiredness,drugs,distraction and drinking 10 of 18 Name 4 factors affecting breaking distance Weather, speed, worn out tires and faulty breaks on the car 11 of 18 What is the more specific term in physics for 'faster'? More kinetic energy 12 of 18 What is the unit for weight? Newtons 13 of 18 Does weight change depending on where you are in the solar system? Yes 14 of 18 Does mass change depending where you are? No 15 of 18 What is weight? A type of force 16 of 18 What is acceleration measured in? m/s squared 17 of 18 How can you tell when ticker timers are getting faster? The dots are further apart from eachother 18 of 18

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