velocity - time graphs z a straight line slope shows an accelerating object!!!! z the steeper the...
TRANSCRIPT
- Slide 1
- Slide 2
- Slide 3
- Velocity - time graphs z A straight line slope shows an accelerating object!!!! z The steeper the slope the greater the acceleration!
- Slide 4
- z If the line slopes downwards it is decelerating! z It has a deceleration of -2 m/s 2. z We use a minus sign to show that an object is decelerating! Click for facts! Objects slowing down!
- Slide 5
- A flat, horizontal line shows an object moving at a constant speed!!!! This object has a constant speed of 5 m/s OBJECTS MOVING AT CONSTANT SPEED Click for facts!
- Slide 6
- QUESTION TIME! z 1. What is the boy racers speed after a) 1s b) 5s c) 9 s z 2. What type of motion does the boy racer have between a) 0s and 2sb) 2s and 8s c) 8s and 9s z 3. Calculate the acceleration of the Boy racer between 0s and 2s. z 4. What is the boys racers deceleration between 8 and 9 seconds? Calculate the total distance the boy racer travelled!
- Slide 7
- The area under a velocity-time graph z If you calculate the area under a velocity time graph it will tell us the distance that the object has travelled!!!!!! Area = 1/2 x base x height Area = 1/2 x 10 x 20 =100m distance travelled = 100m Click for facts! Area = base x height Area = 6 x 5 = 30 m distance travelled = 30m
- Slide 8
- z Write down as much as you can about the motion of the getaway car in each section of the graph! z How far away has the car stopped?