A car is traveling at 20 minutes/second and is brought to rest by applying brakes over a period of 4 seconds.What is it average
1 answer:
-5m/s
Explanation:
Given parameters:
Speed of the car = 20m/s
Time taken = 4s
Unknown:
Average acceleration = ?
Solution:
Acceleration is the change in velocity or speed with time of a body.
Acceleration =
v is the final velocity = 0
u is the initial velocity
t is the time
Input the values:
Acceleration =
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Answer:
Explanation:
From the given information, since the molecular mass of the ion M+ is not given;
Let's assume M+ = 58.0423
So, by applying the 13th rule;
we will need to divide the mass by 13, after dividing it;
The quotient n = no. of carbon; &
The addition of the quotient (n) with the remainder r = no. of hydrogen.
So;
So;
From the given information; we have oxygen present, so since the mass of oxygen = 16, we put oxygen in the molecular formula by removing . Also, since the mass is an even number then Nitrogen is 0.
So, we have: