What is velocity, because it describes both speed and direction

a. a magnitude

b. a force arrow

c. the same as acceleration

d. a vector

A vector ⇒ answer D

Step-by-step explanation:

* Lets revise some definition to solve the problem

- Speed = distance ÷ time

∵ Distance has no direction

∴ Speed has no direction

∴ Speed is a scalar quantity ⇒ (magnitude only)

- Velocity = displacement ÷ time

∵ Displacement has direction

∴ Velocity has direction

∴ Velocity has magnitude and direction

∵ Any vector has magnitude and direction

∴ Velocity is a vector quantity

∵ Velocity describes both speed (magnitude) and direction

∴ Velocity is a vector

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing im pretty sure that is the right answer

step-by-step explanation:

13

step-by-step explanation:

169-1=168

168-3=165

165-5=160

160-7=153

153-9=144

144-11=133

133-13=120

120-15=105

105-17=88

88-19=69

69-21=48

48-23=25

25-25=0

since it took 13times to completely subtract it hence its square root is 13