Speed v = distance travelled / time taken
v = d / t
v = 540 / 60h
v = 9 km /h
Answer:
the number of additional car lengths approximately it takes the sleepy driver to stop compared to the alert driver is 15
Explanation:
Given that;
speed of car V = 120 km/h = 33.3333 m/s
Reaction time of an alert driver = 0.8 sec
Reaction time of an alert driver = 3 sec
extra time taken by sleepy driver over an alert driver = 3 - 0.8 = 2.2 sec
now, extra distance that car will travel in case of sleepy driver will be'
S_d = V × 2.2 sec
S_d = 33.3333 m/s × 2.2 sec
S_d = 73.3333 m
hence, number of car of additional car length n will be;
n = S_n / car length
n = 73.3333 m / 5m
n = 14.666 ≈ 15
Therefore, the number of additional car lengths approximately it takes the sleepy driver to stop compared to the alert driver is 15
Answer:
i think its C hope this is rhight have a good day
Explanation:
Answer:
Power = 1471000[W]
Explanation:
In order to solve this problem, we must use the conversion factor of horsepower to Watts.
1 [Hp] → 735.5 [W]
Now using the conversion factor:
![2000[Hp]*\frac{735.5W}{1Hp}=1471000[W]](https://tex.z-dn.net/?f=2000%5BHp%5D%2A%5Cfrac%7B735.5W%7D%7B1Hp%7D%3D1471000%5BW%5D)
Answer:
(a) 
(b) 
Explanation:
For Part(a)
Apply ∑Fy=ma
Solve for a
For Part(b)
Assume the maximum acceleration (maximum tension upwards is greater than the weight of the chain+boulder)
As the given data
Using equation of simple motion
