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In Physics / High School | 2014-05-22

One car travels east for 360 meters over a period of 15 seconds. A second car travels west for 120 meters over a period of 5 seconds.

What is true about their speeds? What is true about their velocities?

Asked by danaeelara

Answer (3)

Take it one step at a time.
-- Remember that 'speed' means (distance) divided by (time), and the direction doesn't matter.
-- Remember that 'velocity' means the speed and the direction.
First car: 360 meters east in 15 sec. Speed = 360/15 = 24 meters per second Velocity = 24 meters per second east
Second car: 120 meters west in 5 seconds Speed = 120/5 = 24 meters per second Velocity = 24 meters per second west
-- Their speeds (24 and 24) are equal.
-- Their velocities are equal magnitude but opposite (24 east / 24 west).

Answered by AL2006 | 2024-06-10

it's the same because when you divide you can see they have the same velocity

Answered by bahrtanya | 2024-06-10

Both cars have the same speed of 24 meters per second. However, their velocities differ in direction; one is 24 meters per second east and the other is 24 meters per second west. Thus, they have equal magnitude speed but opposite velocities.
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Answered by AL2006 | 2024-12-23