What is acceleration?
Physical Science 1st Semester Test

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Science
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10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Acceleration is the rate of change of velocity of an object. It occurs when an object speeds up, slows down, or changes direction.
2.
FLASHCARD QUESTION
Front
What direction is acceleration in relation to net force?
Back
The acceleration of an object is in the same direction as the net force acting on it.
3.
FLASHCARD QUESTION
Front
What is the formula to calculate speed?
Back
Speed = Distance / Time.
4.
FLASHCARD QUESTION
Front
How do you calculate the time it takes for sound to travel a certain distance?
Back
Time = Distance / Speed. For example, if sound travels at 330 m/s, to find the time for 1,485 m: Time = 1,485 m / 330 m/s = 4.5 s.
5.
FLASHCARD QUESTION
Front
What is the SI unit of force?
Back
The SI unit of force is the Newton (N).
6.
FLASHCARD QUESTION
Front
What is the relationship between force, mass, and acceleration?
Back
According to Newton's 2nd law of motion, Force = Mass x Acceleration (F = ma).
7.
FLASHCARD QUESTION
Front
What is the 1st law of motion?
Back
An object at rest stays at rest, and an object in motion stays in motion at a constant velocity unless acted upon by a net external force.
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