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klasskru [66]
3 years ago
6

A child rides the train at Disneyland which takes him in a loop around the amusement park at a speed of 3 m/s. Which statement b

est describes the child's motion on the train.
The velocity is changing because the direction is the same.

The velocity is the same because the speed is a constant.

The velocity is changing because the direction is changing.

The velocity is changing because the speed is the same.
Physics
2 answers:
mrs_skeptik [129]3 years ago
7 0

A child rides the train at Disneyland which takes him in a loop around the amusement park at a speed of 3 m/s.

-- The speed is constant, because it's always 3 m/s.

<em>-- The velocity is changing because the direction is changing. </em>(This is one process that's called "acceleration".  Th e others are speeding up and slowing down.)

-- Strange as it may seem, the AVERAGE velocity for one whole loop around the whole park is zero !  Because velocity uses the distance between the start-point and the end-point, no matter what the route is from start to finish, and the ride ends in the same place where it began, so the distance between the start-point and end-point is zero.

velikii [3]3 years ago
6 0
The velocity is a vectorial quantity, whereas speed is a scalar quantity, meaning it depends on the direction!
As such, the velocity is changing because the direction is changing.
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