Lesson 2 Unit 1 Speed and Velocity

Question 1

What is speed

Answer 1

a measurement of the distance an object travels per unit time m/s

Question 2

What is constant speed

Answer 2

When the speed of an object remains the same - it does not increase or decrease

Question 3

What is isntantaneous speed

Answer 3

A speed at a specific distance and instant in time

Question 4

Anerage speed equation

Answer 4

total distance/total time

Question 5

Steps to average speed equation

Answer 5

1. write data: T, D, V 2. write equation v=d/t. 3. insert data to equation, 4. solve and fully write your answer
   v= x m/s

Question 6

Distance time graphs

Answer 6

Graphs describe a journey made by object
Time is on x axis, distance is on y axis
The steeper the line the faster it goes (closer to y axis)

Question 7

How to calculate speed

Answer 7

d2 - d1/t2 - t1 or total distance/total time (different graphs / problems call for different equations)

Question 8

What is velocity

Answer 8

Velocity is the speed and direction of a moving object

Question 9

How to show velocity of an object

Answer 9

by an arrow, the greater the speed, the longer the arrow, the arrow points in the direction of object’s movement.

Question 10

Scalar quantities

Answer 10

Described by magnitude (numerical value or strength) alone, such as distance, mass, temperature…

Question 11

Vector quantities

Answer 11

described by both magnitude and direction such as velocity and displacement…