1.4 velocity-1.7

Question 1

average speed def+formula (2)

Answer 1

a quantity that measure how fast or how slowly an object is

Average speed= (distance travelled)/(Time interval spent travelling)= d/CItime

Question 2

Average velocity Formula+direction (2)

Answer 2

(CI)r/(CI)t

An objects average velocity vector points in the same direction as the displacement vector (CI)r.

Question 3

The length of the velocity vector represents

Answer 3

the average speed with which the object moves between the two points

Question 4

Longer velocity vectors indicate

Answer 4

faster motion

Question 5

Constant velocity (2)

Answer 5

Velocity vector does not change: same length and direction

Question 6

Because velocity is a vector, it can change in two possible ways:

Answer 6

1. The magnitude can change, indicating a change in speed
2. The direction can change indicating that the object has changed direction

Question 7

Average acceleration

Answer 7

average acceleration= (CI)v/(CI)t

Large magnitude for objects that speed uo quickly and small magnitude for objects that speed up slowly

Question 8

The average acceleration vector points

Answer 8

in the same direction as the change in velocity vector

Question 9

An objects motion can be described in terms of three fundamental quantities

Answer 9

Its position
velocity
and acceleration

Question 10

Motion in 1 dimension?

Answer 10

The vectors are restricted to point only forward or backwards.

*No need to arrows of v/a/r just use signs