vectors and equations of motion

Question 1

What is a vector quantity

Answer 1

physical that has both magnitude and direction

Question 2

Scalar quantity

Answer 2

magnitude only

Question 3

Resultant vector

Answer 3

A single vector which has the same effect as the original vectors acting together

Question 4

acceleration

Answer 4

rate of change of velocity

Question 5

Velocity

Answer 5

rate of change of displacment

Question 6

What is important to remember when using graphs of motion

Answer 6

1- choose a direction as positive
2- if up is positive gravitional acceleration is negative
3- if up is negative gravitational accelerate is positive
4- max height is 0
5- gravitational acceleration is always 9.8 at any point
6-Never leave the sign in final answer
7- if up is taken as positive and an object ends below its starting the displacement is negative