Velocity Formatter

Write an arrow function formatVelocity that takes two parameters: value (a number) and unit (a string). If unit is not provided, it should default to 'km/h'. The function should return a template literal string in the format: {value} {unit}. If value is negative, return 'Invalid speed'.

Examples

formatVelocity(120, "mph")

→ "120 mph"

formatVelocity(50)

→ "50 km/h"

solution.js

JAVASCRIPT

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Tests

0 of 4 passing

•
mph formatting
formatVelocity(120, "mph")
expected "120 mph"
•
default unit formatting
formatVelocity(50)
expected "50 km/h"
•
negative value check
formatVelocity(-10)
expected "Invalid speed"
•
zero speed formatting
formatVelocity(0, "m/s")
expected "0 m/s"

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