Topic 3.1: Motion

Question 1

speed

Answer 1

the rate of change of distance

Question 2

displacement

Answer 2

the distance an object has travelled in a given direction

Question 3

velocity

Answer 3

the rate of change of displacement

Question 4

acceleration

Answer 4

the rate of change of velocity

Question 5

describe how the terminal velocity can be determined using light gates

Answer 5

set up light gates vertically and measure the distance between them

Question 6

describe the experiment in which one can determine g using an electromagnet

Answer 6

an electromagnet holds a steel ball suspended distance above a surface , then start the timer when the electromagnet is deactivated , and stop it when the surface is hit
As the ball was initially resting , u = 0
the distance and time is known so we can use SUVAT equation : s = ut + 1/2at2
calculate “a” which is “g”