Physics - unit 1 - Motion 2.0 / 5 based on 1 rating ? PhysicsMotionASAQA Created by: callumsmith69Created on: 29-12-14 14:45 What is a Scalar? A Quantity that has just a magnitute 1 of 21 Give 3 examples of a scalar. Temperature, Time, length, Speed and Energy. 2 of 21 What is a Vector? A quantity with has magnitude and a direction. 3 of 21 Give 3 examples of a Vector. Force, Velocity, Acceleration and momentum. 4 of 21 What is it called when you add two or more Vectors? Finding the resultant Vector. 5 of 21 Only when can you add a vector? When they are add right angles (perpendicular) to each other. 6 of 21 What are the equations of constant acceleration called? The SUVAT equations. 7 of 21 What does each letter in SUVAT stand for? S- displacement, U- initial velocity, V- final velocity, A- acceleration, T- Time taken. 8 of 21 What is Free Fall? The motion of on object undergoing an acceleration of gravity. 9 of 21 What is the only force acting on an object in Free Fall? weight (caused by gravity). 10 of 21 Why is 'g' usually a negative figure? It is usually going downwards. 11 of 21 What is the value of 'g' with the unit? 9.81ms-2 12 of 21 Give an example of when the acceleration would change from positive to negative. When a ball is thrown up it would be positive and when it comes down it will be negative. 13 of 21 What did Aristotle believe? That heavier, more massive objects would fall towards the Earth faster than lighter ones. 14 of 21 What did Galileo believe? That all objects would fall at the same rate, but resistance was the reason the appeared not to fall at the same rate. 15 of 21 What does gradient show in a distance time graph? Velocity 16 of 21 In a distance time graph, a steeper gradient means what? A Larger acceleration. 17 of 21 Is the curve straight of curved in a distance time graph? Curved. 18 of 21 What does the gradient tell you in a Velocity time graph? Acceleration. 19 of 21 What does the area under the graph represent on a velocity time graph? The distance travelled. 20 of 21 What happens in a velocity time graph if there is not a constant acceleration? There will be a non constant gradient so a curved line. 21 of 21
Comments
No comments have yet been made