3 years ago

3. An atom has 11 protons in the nucleus. What is the atomic number? What is the name of this

Physics

1 answer:

jenyasd209 [6]3 years ago

7 0

Answer:

Explanation:

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If a 16 N net force makes an object accelerate at 4 m/s2, what is the mass of the object?

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Answer:

4 kg

Explanation:

Acceleration = 4 m/s^2

Force = 16 N

Force = mass * acceleration

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A roller coaster is moving at 25m/s at the bottom of a hill. Three seconds later it reaches the top of the hill moving at 10m/s.

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Answer:

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Explanation:

acceleration is defined as the rate of change of velocity per unit time. Therefore, acceleration, $a=\frac {\triangle v}{\triangle t}$

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Substituting initial and final velocities with 25 m/s and 10 m/s then using time as given in the question of 3 s then

$a=\frac {25-10}{3}=\frac {15}{3}=5 m/s^{2}$

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