2A.Imani starts her bicycle from rest and accelerates uniformly to a speed of 40 km/h in 6 minutes. She maintains this speed for another 5 minutes, then applies the brakes and decelerates uniformly to rest in 3 minutes. (i) Select a velocity-time graph to show the different segments of Imani's journey. (ii) Calculate the acceleration in km/h² during the first 6 minutes of the journey.

icon
Related questions
Question
100%
Solve ii part only in 10 min pls plz plz
2A. Imani starts her bicycle from rest and accelerates uniformly to a speed of 40 km/h in 6 minutes.
She maintains this speed for another 5 minutes, then applies the brakes and decelerates
uniformly to rest in 3 minutes.
(1) Select a velocity-time graph to show the different segments of Imani's journey.
(ii) Calculate the acceleration in km/h² during the first 6 minutes of the journey.
(iii) Calculate the deceleration in km/h² for the last 3 minutes of the journey.
(iv) Calculate the total distance covered in km for the entire journey.
Calculate the average speed for the entire journey in km/h to the nearest whole number.
(1)
(ii)
(iv)
40
6
12
15
mins
km/h²
km
Enter your answer
40
km/h
(iii)
(1)
6
11
14
mins
40
km/h²
km/h
15
1
7
Tab
18
mins
2
8
Transcribed Image Text:2A. Imani starts her bicycle from rest and accelerates uniformly to a speed of 40 km/h in 6 minutes. She maintains this speed for another 5 minutes, then applies the brakes and decelerates uniformly to rest in 3 minutes. (1) Select a velocity-time graph to show the different segments of Imani's journey. (ii) Calculate the acceleration in km/h² during the first 6 minutes of the journey. (iii) Calculate the deceleration in km/h² for the last 3 minutes of the journey. (iv) Calculate the total distance covered in km for the entire journey. Calculate the average speed for the entire journey in km/h to the nearest whole number. (1) (ii) (iv) 40 6 12 15 mins km/h² km Enter your answer 40 km/h (iii) (1) 6 11 14 mins 40 km/h² km/h 15 1 7 Tab 18 mins 2 8
Expert Solution
steps

Step by step

Solved in 3 steps

Blurred answer