EXAM

Question 1

what is the difference between scalar and vector?

Answer 1

scalar is only a #; no direction

vector includes direction and speed

Question 2

what is the difference between distance and displacement?

Answer 2

distance- how far you’ve gone (scalar)

displacement- how far & which direction (vector)

Question 3

what is the difference between speed and velocity?

Answer 3

speed- how fast (scalar)

velocity- how fast & which direction (vector)

Question 4

what is the difference between velocity and acceleration?

Answer 4

velocity- how fast & which direction (vector)

acceleration- rate at which you change velocity (vector)

Question 5

the unit for displacement and distance is____

Answer 5

m (meters)

Question 6

the unit for speed and velocity is_____

Answer 6

m/s (meters/ second)

Question 7

the unit for acceleration is____

Answer 7

m/s ^ 2 (meters/ second squared)

Question 8

formula for speed

Answer 8

s =d/t (speed = distance over time )

Question 9

formula for velocity

Answer 9

v= change in distance / change in time
v-average= (V2-V1)/ 2

Question 10

formula for acceleration

Answer 10

A= v2-v1/ time

Question 11

forces

Answer 11

F= force. m= mass. A= acceleration.
u=coefficiant of friction. w=weight

F=ma W=mg Ff (friction)= u x Fn

Question 12

examples of scalar quantities

Answer 12

25 degrees farenheit
2500 calories
260
56 km/s

Question 13

average speed

Answer 13

find the slope of the line from the first point to the last point