A car is traveling 20 kilometers an hour, then changes direction at a fork in the road. The action that the car takes changes its
A. speed, but not its velocity.
B. velocity, but not its speed
C. speed, but not its acceleration.
D. acceleration, but not its velocity.
Answers
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The action that the car takes changes its velocity but not it's speed.
Option: B
Explanation:
- Distance travelled by an object is a ‘scalar quantity’. As a result it is irrelevant of the Direction of the movement.
- On the other hand, displacement is a ‘vector quantity’, so it can be positive, negative or zero value.
- Distance per ‘unit time’ is known as speed but if it's dependent on Direction, it is known as velocity.
- Hence as the direction changes the ‘speed remains constant’ by the velocity changes due to change in ‘direction’.
Learn more about velocity and speed
What is the numerical ratio of velocity to speed of an object?
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What is the difference between velocity and speed
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Answer:A
Explanation:
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