# physics anyone?

A 42.7 kg student runs down the sidewalk and

jumps with a horizontal speed of 4.10 m/s onto a stationary skateboard. The student

and skateboard move down the sidewalk with

a speed of 3.91 m/s.

a) Find the mass of the skateboard.

Answer in units of kg.

### 1 Answer

Relevance

- Anonymous1 month ago
Conservation of momentum

mass of student * speed of student = (mass of student + skateboard) * speed of combined student and skateboard

Solve for the mass of the skateboard.

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