Physics unit 1 section 1 0.0 / 5 ? PhysicslolASAQA Created by: Callumjamessmith1998Created on: 05-04-15 14:57 What is a scalar? a quantity with just a magnitude 1 of 20 What is a vector? A quantity with a magnitude and direction 2 of 20 Give 3 examples of a scalar mass, temperature, length, speed 3 of 20 give 3 examples of a vector force, velocity, acceleration, momentum 4 of 20 What rule do we use a lot when finding out vectors? SohCahToa 5 of 20 What is the equation for acceleration? A = (v-u)/t 6 of 20 What does the v stand for? final velocity 7 of 20 What does the u stand for? initial velocity 8 of 20 What does the 's' stand for in suvat? Displacement 9 of 20 What is displacement? The shortest distance for two points 10 of 20 What is free fall? the motion of an object undergoing an acceleration of g 11 of 20 What is the only force acting on someone in free fall? weight 12 of 20 what did Aristotle believe? That heavier objects would accelerate to the ground faster than lighter ones 13 of 20 What did Galileo believe ? That all objects would accelerate towards the earth at the same rate, but air resistance effects it 14 of 20 What experiment did Galileo use to test this? Inclined slope, rolled a ball down a slope and measure how long it took with a water clock, he found the balls accelerate at a constant rate 15 of 20 What did Galileo use a slope? He found that it reduced the effects of air resistance 16 of 20 In a displacement time graph, what does the gradient show? velocity 17 of 20 A steeper gradient means what? greater acceleration 18 of 20 on a velocity time graph the gradient shows what? acceleration 19 of 20 How do you find the distance travelled on a velocity time graph? Area under the curve 20 of 20
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