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 =
learn more:
Acceleration brainly.com/question/3820012
#learnwithBrainly
You might be interested in
Answer: 17) d.
18. c. The empirical formula of a compound can be twice the molecular formula.
Explanation:
Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound.
Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.
To calculate the molecular formula, we need to find the valency which is multiplied by each element to get the molecular formula.
The equation used to calculate the valency is:
The empirical mass can be calculated from empirical formula and molar mass must be known.
17. Thus the empirical formula of should be
18. The molecular formula will either be same as empirical formula or is a whole number multiple of empirical formula. Thus the empirical formula of a compound can never be twice the molecular formula.