Answer:
5 Days to Seconds = 432000
Explanation:
Answer:
Speed of the speeder will be 28 m/sec
Explanation:
In first case police car is traveling with a speed of 90 km/hr
We can change 90 km/hr in m/sec
So ![90km/hr=\frac{90\times 1000m}{3600sec}=25m/sec](https://tex.z-dn.net/?f=90km%2Fhr%3D%5Cfrac%7B90%5Ctimes%201000m%7D%7B3600sec%7D%3D25m%2Fsec)
Car is traveling for 1 sec with a constant speed so distance traveled in 1 sec = 25×1 = 25 m
After that car is accelerating with
for 7 sec
So distance traveled by car in these 7 sec
![S=ut+\frac{1}{2}at^2=25\times 7+\frac{1}{2}\times 2\times 7^2=224m](https://tex.z-dn.net/?f=S%3Dut%2B%5Cfrac%7B1%7D%7B2%7Dat%5E2%3D25%5Ctimes%207%2B%5Cfrac%7B1%7D%7B2%7D%5Ctimes%202%5Ctimes%207%5E2%3D224m)
So total distance traveled by police car = 224 m
This distance is also same for speeder
Now let speeder is moving with constant velocity v
so ![224=\left ( 1+7 \right )v](https://tex.z-dn.net/?f=224%3D%5Cleft%20%28%201%2B7%20%5Cright%20%29v)
v = 28 m/sec