A skateboarder starts from rest at the origin of a straight sidewalk and glides…
PHYSICS · Multi-part · CBSE · Physics · Motion in a Plane · Motion in a Plane
Problem
A skateboarder starts from rest at the origin of a straight sidewalk and glides directly west. On a sketch of the sidewalk, a single arrow representing the skateboarder’s displacement is drawn from the origin pointing toward the west (negative direction). The arrow’s measured length is 4.5 cm. A note on the diagram states that 1.00 cm of arrow length corresponds to 1.20 m of displacement.
The entire motion takes 3.0 s.
(a) Calculate the skateboarder’s algebraic displacement, including correct sign and units.
(b) Determine the skateboarder’s average velocity during the 3.0 s interval.
(c) Using a new scale in which 1.0 cm of arrow length represents 0.50 m·s−1 of speed, draw and clearly label an arrow that represents the average velocity you found in part (b). Explain how you selected the arrow’s length and direction.