Which statement is true?
1 answer:
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Answer:
= 3.8 m/s
Explanation:
When the runner start the running, she is at rest. So the initial velocity of the runner is zero (0 m/s). And then she accelerates at a rate of 1.9 m/s² for 2.2 s. But we need to find the final velocity after t = 2 s when she starts the running. So, we take time equal to 2 second.
Given data:
Initial velocity = = 0 m/s
Acceleration = a = 1.9 m/s² (for 2.2 s after starting the race)
Time = t = 2 s
Final velocity = = ?
According to the First equation of motion
=
+ at
= 0 + (1.9)(2)
= 3.8 m/s
Answer:
Atmospheric Refraction is the bending of light rays when they pass through the layers of earths atmosphere
Explanation:
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