*. speed and velocity .*

Question 1

What are scalar and vector quantities and give two examples of each?

Answer 1

-scalar: only have a magnitude (speed and distance)
-vector: both a magnitude and direction (velocity and displacement)

Question 2

What is the equation for speed and what is it generally measured in?

Answer 2

-speed= distance/time , m/s

Question 3

What is the equation for velocity and what is it generally measured in?

Answer 3

-velocity=displacement/time , m/s

Question 4

What does a negative velocity usually represent?

Answer 4

-the direction is backwards.

Question 5

What are the general speeds for walking, running, car and in a plane?

Answer 5

-walking: 1.5m/s
-running: 3m/s
-cars: 25m/s
-plane: 250m/s