Accelerated Motion

Accelerated Motion

• Acceleration is the rate at which an object's velocity changes over time.

Formulas:

• Change of Velocity (Δv) / Time (Δt) = Acceleration (a) ...... Δv / Δt = a
• Displacement (Δd) / Time (Δt) = Velocity ........ Δd / Δt = v
• Instantaneous acceleration is the change of velocity in an instant.

Acceleration Motion Diagram. The astrisk represents the object in motion.

• Begin*->*-->*--->*---->*----->*End

Positive and Negative Acceleration:

• Positive acceleration is
  • moving in a positive direction and speeding up.
  • moving in a negative direction and slowing down.
• Negative Acceleration is
  • moving in a positive direction and slowing down.
  • moving in a negative direction and speeding up.

Positive and Negative Acceleration Motion Diagrams.

• Positive:
  • Begin*->*-->*--->*---->*----->*End
  • End*<-*<--*<---*<----*<-----*Begin
• Negative
  • Begin*----->*---->*--->*-->*->*End
  • End*<-----*<----*<---*<--*<-*Begin

Velocity Lab:

Role a ball down a ramp and mark the distance from the ramp it travelled. You must have no less than 5.

Example:

	Distance
1 Sec.	4 cm
2 Sec.	8 cm
3 Sec.	12 cm
4 Sec.	16 cm
5 Sec.	20 cm

After you find your points Graph them.