this is due tonight and i need some help w/ it! how do mass and distance affect the strength of the force of gravity? -btw i nee
1 answer:
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Answer:
The acceleration of the car is -5m/s²
Explanation:
Given parameters:
Initial velocity = 75m/s
Final velocity = 0m/s
Time = 15s
Unknown:
Acceleration of the car = ?
Solution:
Acceleration is the rate of change of velocity with time;
Mathematically;
Acceleration =
Insert parameters and solve,
Acceleration = = -5m/s²
The acceleration of the car is -5m/s²
Answer:
<h2>0.64 moles </h2>Explanation:
To find the number of moles in a substance given it's number of entities we use the formula
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
We have the final answer as
<h3>0.64 moles</h3>Hope this helps you