Answer:
The four values of f are given in part a of the question as
f= 0.30, 0.50, 0.70, 0.90
The answers to the question are
i. icy road, f = 0.3
ii. Very good road with great tires, f = 0.9
iii. Asphalt road with fair tires, f = 0.7
iv. Wet road with fair tires, f = 0.5
Step-by-step explanation:
The braking distance is given by
Where
d = Braking distance
f = Coefficient of friction
G = Constant = Grade of the road and
g = Acceleration due to gravity = 32.19 ft/s²
Where v = 60 mph we have
Therefore for
f = 0.3, d = 400.41 ft
f = 0.5, d = 240.35 ft
f = 0.7, d = 171.71 ft
f = 0.9, d = 133.56 ft
From the breaking distance required we have
i. icy road, f = 0.3
ii. Very good road with great tires, f = 0.9
iii. Asphalt road with fair tires, f = 0.7
iv. Wet road with fair tires, f = 0.5
Answer:
The coordinates of P' are (4.8,-4.8).
Step-by-step explanation:
The rule of dilation represent the dilation with scale factor 2.4 and center at origin.
If the scale factor of the dilation is k and the center is (0,0), then
Since the scale factor is 2.4, therefore
From the given figure it is noticed that the coordinates of P are (2,-2). The coordinates of P' are
Therefore the coordinates of P' are (4.8,-4.8).