2nde 2019 ch 12 ED

​Signaux sonores

Multiple Select

Cocher les unités possibles de la vitesse :

• m·s

• m·s^-1

• m/s

• km·h

• km·h^-1

​

​1/10 = 10^-1
1/ x = x^-1
m/s = m·s^-1
km/h = km·h^-1

Multiple Select

Cochez la(les) bonne(s) Expression(s) Littérale(s)

• v = d + Δt

• $$v\ =\ d\ \timesΔ\ t$$

• v = Δt - d

• $$v\ =\ \frac{Δt}{d}$$

• $$v\ =\ \frac{d}{Δt}$$

Multiple Select

Cochez la(les) bonne(s) Expression(s) Littérale(s)

• d = v x Δt

• v = d x Δt

• $$Δt\ =\ \frac{d}{v}$$

• $$v\ =\ \frac{d}{Δt}$$

• $$d\ =\ \frac{v}{Δt}$$

Multiple Choice

Cochez les bonnes conversions :

• 36 m/s

  =

  36 × 10³ km/ 3600h

  =

  10 km/h

• 36 km/h

  =

  36 × 10³ m/ 3600s

  =

  10 m/s

Fill in the Blanks