Answer:
Step-by-step explanation:
−8.5d ≥ 20
Divide both sides by -8.5:
This is the answer.
The force on the last car of a train with a mass of 4.5 kg is 8.0 N. What is the train's acceleration in ms2?
2 answers:
Answer:
The acceleration of train is 1.78 meter second²
Step-by-step explanation:
Given as :
The mass of Train = 4.5 kg
The Force exerted on last car of train = 8 Newton
Let The acceleration of car = a ms²
∵ Force applied on body is the product of mass and acceleration of body
So , Force = Mass × Acceleration
Or, 8 Newton = 4.5 kg × a
∴ a = = 1.78 ms²
Hence The acceleration of train is 1.78 meter second² Answer
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Answer:
The population will reach 20,400 after 6 years.
Step-by-step explanation:
Exponential function:
y(t)= Population after t years
= initial population
r= rate of grow
t= time.
A town has a population of 17,000 and grows at a rate 3% every year.
y(t)= 20,400, = 17,000, r=3%=0.03, t=?
Taking ln function both sides
⇒ t = 6 year.
The population will reach 20,400 after 6 years.