In order to be able to measure the speed of a moving object it is essential to have a means time. True/False
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0
Answer:
true
Explanation:
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Solution
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Correct option is
A
If its speed changes, its velocity must change and it must have some acceleration.
C
If its velocity changes, its speed may or may not change, and it must have some acceleration.
v=
change in time
change in displacement
anda=
change in time
change in velocity
Speed is the magnitude of velocity.
There can be a case where there is change in direction but not in magnitude.
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