Xavier is roller skating at 14 km/h and tosses a set of ke relative to the ground is km/h.

Question

Xavier is roller skating at 14 km/h and tosses a set of ke
relative to the ground is
km/h.

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Thiên Ân 5 months 2021-08-15T03:22:14+00:00 1 Answers 126 views 0

Answers ( )

    1
    2021-08-15T03:24:11+00:00

    Complete question :

    Xavier is roller skating at 14 km/h and tosses a set of keys forward on the ground at 8 km/h. The speed of the keys relative to the ground is km/h.

    Answer:

    22 km/hr

    Explanation:

    Speed of keys with respect to ground ; V(k – g)

    Speed of keys with respect to skater ; V(k – s)

    Speed of skater with respect to ground ; V(s – g)

    V(s – g) = 8 km/hr

    V(k – s) = 14 km/hr

    Substituting the values into the equation :

    V(k – g) = V(s – g) + V(k – s)

    V(k – g) = 8km/hr + 14km/hr

    V(k – g) = 22 km/hr

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