Science 3rd Quarter

• Motion - continous change in position
• Distance - total length of the entire path that the body travelled in moving from one place to another
• Scalar - has magnitude but does not have direction
• Displacement - shortest distance between the objects initial and final position
• Speed - refers to how far an object moves in a given time interval
• What is the formula to get speed? s = d /
• Average - refers to the speed of an object throughout its travel (totality)
• Instantaneous Speed - refers to the speed of an object at particular instant and changes speed and second/hour
• Constant speed - refers to the instantaneous speed of an object that are the same and doesnt change speed
• Speedometer - device use to measure instantaneous speed of a vehicle
• Velocity - refers to how fast an object is moving and which quantity
• What is the formula to get speed? V = d> / t
• Is velocity scalar?

  False
• Is speed vector?

  False
• Acceleration - change in speed or velocity
• Galileo Galilei - "father of Modern Science", first to analayze the motion of free falling body
• Positive Acceleration - increase in speed and velocity
• Deceleration - decrease in speed and velocity
• What is the formula to get acceleration? a = vf - vi / time
• What unit do we use for acceleration? m/s²
• If the distance has the same direction, to find the displacement, do we add or subtract?

  Subtract
• How do we get the total distance?

  Add
• Vector - has magnitude and direction
• What is the formula of Phythagorean Theory?

  The square root of a² plus b²
• Emily walked 5m, West to get Mcdonalds and walked 6m, East to get to the bus. What is the displacement?

  1m
• Physche went running at a distance of 120m in 30s. What was Physche's average speed?

  4 m/s