4) if the speed limit on highways changed from 100 km/hr to 110 km /hr,how much more distance would a car need to speed:
A) on dry roads*0.06
B) on wet roads *0.10
C) on icy roads *0.15
*Note convert from km/hr to m/s ,multiply by 0.278
Or m/s to km/hr ,divide by 0.278
Honestly, there is no need to speed at all. I don't understand the question.
It's braking distance or stopping distance
To determine the additional distance a car would need to speed in different road conditions, we need to follow these steps:
1) Calculate the difference in speed limits:
- Initial speed limit on highways: 100 km/hr
- New speed limit on highways: 110 km/hr
The difference in speed limits is 110 km/hr - 100 km/hr = 10 km/hr.
2) Convert the difference in speed limits from km/hr to m/s:
To convert from km/hr to m/s, we need to multiply by 0.278.
10 km/hr * 0.278 = 2.78 m/s.
So, the difference in speed limits is 2.78 m/s.
Now, let's calculate the additional distance required to speed in different road conditions:
A) On dry roads, we need to multiply the difference in speed limits by 0.06:
Additional distance on dry roads = 2.78 m/s * 0.06 = 0.1668 m/s.
B) On wet roads, we need to multiply the difference in speed limits by 0.10:
Additional distance on wet roads = 2.78 m/s * 0.10 = 0.278 m/s.
C) On icy roads, we need to multiply the difference in speed limits by 0.15:
Additional distance on icy roads = 2.78 m/s * 0.15 = 0.417 m/s.
Therefore:
A) On dry roads, the car would need an additional distance of 0.1668 meters.
B) On wet roads, the car would need an additional distance of 0.278 meters.
C) On icy roads, the car would need an additional distance of 0.417 meters.