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Catalyst

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Catalyst 1. What is the difference between speed and velocity? 2. Put these objects in order from slowest to fastest: Peregrine falcon Cheetah Human – PowerPoint PPT presentation

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Title: Catalyst


1
Catalyst
  • 1. What is the difference between speed and
    velocity?
  • 2. Put these objects in order from slowest to
    fastest
  • Peregrine falcon
  • Cheetah
  • Human
  • Car (at the highway speed limit)
  • Mako shark
  • Ocean wave
  • Maglev train

2
Catalyst
  • Put these objects in order from slowest to
    fastest
  • Peregrine falcon (6, 200 mph)
  • Cheetah (5, 70 mph)
  • Human (2, 25 mph)
  • Car (at the highway speed limit) (4, 60 mph)
  • Mako shark (3, 31 mph)
  • Ocean wave (1, 4.5 mph)
  • Maglev train (7, 350 mph)

3
Speed and Velocity
4
Formulas
  • Speed
  • speed distance
  • time
  • s d
  • t
  • speed of a car is mph miles distance
  • hour time

5
Speed vs. Velocity
speed how fast an object is moving Ex 35 m/s velocity how fast an object is moving in a given direction Ex 35 m/s west
6
IFAS Problem Solving
  • IFAS
  • Info all information given
  • Formula - written and ready to use
  • Algebra - work shown with numbers and units
  • Solution - circled and identified

7
My Example
  • Ex1 Calculate the speed for a car that went a
    distance of 120 miles in 2 hours time.
  • d120 miles
  • t2 hours
  • sd/t

s120mi / 2hr s 60 mi/hr or 60 mph
8
Your Example
  • Ex2 A baseball is thrown a distance of 60 feet.
    What is its velocity if it takes 5 seconds to
    cover the distance from the pitchers mound to
    home plate?

9
My Example
  • Ex3 How much time does it take for a bird flying
    at a velocity of 45 miles per hour south to
    travel a distance of 1,800 miles?

10
Formulas
d
s
t
11
Your Example
  • Ex4 A comet is cruising through the solar system
    at a speed of 50,000 km per hour for 4 hours.
    What is the total distance traveled by the comet
    during this time?

12
Graphing Distance vs. Time
Times (s) Distance (m) for Car 1 Distance (m) for Car 2
1 2 3
2 4 6
3 6 9
4 8 12
13
Graphing Distance vs. Time
d
d
d
t
t
t
No Motion
Constant Speed
Increasing Speed
14
Example 5
  • Ex5 Every summer I drive to Michigan. It is 3900
    km to get there. If I average 100 km/hr, how much
    time will I spend driving?

15
Example 6
  • Ex6 The pitchers mound in baseball is 80 m from
    the plate. It takes 4 seconds for a pitch to
    reach the plate. How fast is the pitch?

16
Example 7
  • Ex7 If you run a t 12 m/s for 15 minutes, how
    far will you go?

17
Example 8
  • Ex8 A bullet travels at 850 m/s. How long will
    it take a bullet to go 1000 m?
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