I believe the answer is D. <span>The hypothesis is revised and another experiment is conducted.</span>
30mi/6hrs is a speed of 5 mph, which converts to a pace of 12 min/mi.
Sorry!
This cannot be answered. We don't have weight, height, etc.
Answer:
Part a)
acceleration = -0.042 m/s/s
Part b)
initial speed = 14.17 m/s
final speed = 5.77 m/s
Explanation:
Part a)
Let the initial velocity of the motorcycle is

now at the end of 80 s let the speed is

after another 120 s let the speed will be

now we know that



also we know that

also we have


now we can say

also we know



Part b)
now we have



so the starting velocity of the trip is

now speed after t = 200 s is given as


