P8 4.5 / 5 based on 3 ratings ? PhysicsForces and MotionGCSEAQA Created by: sophielouise277Created on: 26-11-18 16:38 What is displacement? Distance without change of direction 1 of 29 What is a vector? Physical quantities that have a direction 2 of 29 What are some examples of vectors? Acceleration, force, momentum, weight and gfs 3 of 29 What are scalars? Physical quantities that have size but no direction 4 of 29 What are some examples of scalars? Speed, distance, time, mass, energy and power 5 of 29 What is magnitude? The size of a quantity 6 of 29 The length of a force arrow represents what? Magnitude of vector quantity 7 of 29 What can a force change? Shape of an object or its state of rest or its motion 8 of 29 What is a force? A push or pull that acts on an object 9 of 29 What is a contact force? Only acts when objects touch 10 of 29 What are examples of contact forces? Friction, resistance 11 of 29 What are examples of non contact forces? Magnetic, electrostatic, gravity 12 of 29 What does Newton's third law of motion state? When two objects interact they exert equal and opposite forces on one another 13 of 29 What force makes a car move? Driving force 14 of 29 When a car moves forward what happens? Force of friction of road on tyre in forward direction and force of friction of tyre on road in reverse 15 of 29 What is the resultant force? The single force that has the same effect as all the forces acting on the object 16 of 29 What does Newton's first law of motion state? If the forces acting on an object are balanced the resultant force is 0 17 of 29 What else does the law state? Object at rest=stationary, if an object is moving it keeps moving with the same speed in the same direction 18 of 29 What happens to the resultant force when an object is acted on by two unequal forces acting in opposite directions? It is equal to difference between the two and in the direction of larger force 19 of 29 What is the weight of an object called? Load 20 of 29 What is the force someone applies called? Effort 21 of 29 How to work out moment of a force? Force x perpendicular distance 22 of 29 What does a low gear give? Low speed and high turning effect 23 of 29 What does a high gear give? High speed and a low turning effect 24 of 29 What is the centre of mass? Is the point at which its mass can be thought of as being concentarted 25 of 29 What does freely suspended mean? It returns to equilibrium 26 of 29 For an object turning what happens? The sum of clockwise movements = anticlockwise movements 27 of 29 What is used to find resultant force of two forces not in same direction? Parallelogram of forces 28 of 29 What are the key conditions for a force to be in equilibrium? Resultant force is 0 and forces have no turning effect 29 of 29
Comments
No comments have yet been made