Cette leçon contient 20 diapositives, avec diapositives de texte.
Éléments de cette leçon
This lesson
rearranging the formula for acceleration
speed-time graphs
Slide 1 - Diapositive
Learning goals 4.4
Calculate acceleration
Define the unit for acceleration
Rearrange the formula for acceleration
Read a speed-time graph correctly
Explain terminal velocity
Slide 2 - Diapositive
Learning goals 4.4
Calculate acceleration
Define the unit for acceleration
Rearrange the formula for acceleration
Read a speed-time graph correctly
Explain terminal velocity
Slide 3 - Diapositive
Learning goals 4.4
Calculate acceleration
Define the unit for acceleration
Rearrange the formula for acceleration
Read a speed-time graph correctly
Explain terminal velocity
Slide 4 - Diapositive
Recap
What is the formula for acceleration
What is the unit of acceleration. Explain your answer
Slide 5 - Diapositive
acceleration=timefinalspeed−startingspeed
Slide 6 - Diapositive
a=tvf−vi
acceleration=timefinalspeed−startingspeed
Slide 7 - Diapositive
a=tvf−vi
acceleration=timefinalspeed−startingspeed
a: acceleration
vf: final speed
vi: initial speed
t: time
Slide 8 - Diapositive
Unit of Acceleration
speed/time
(m/s)/s
Slide 9 - Diapositive
Unit of Acceleration
speed/time
(m/s)/s
m/s
2
Slide 10 - Diapositive
Exercise
Mike goes for a run. At the start of his run he runs at a speed of 7 m/s. 25 seconds later he runs at a speed of 4 m/s. Calculate his acceleration.
Slide 11 - Diapositive
Rearranging the formula for speed
a=tvf−vi
3=26
Slide 12 - Diapositive
Elevators in in the Yokohama tower in Japan are among the fastest in the world. They accelerate upwards at a rate of 3.125 m/s2 for 4 seconds. Starting from rest, what is their final speed?
A cyclists cycles at a speed of 5/ms. He accelerates at a rate of 1.26 m/s2 for 6.3 seconds. Calculate his final speed.
