Question 2

A boy walks in an EASTERLY direction, as shown below. After he passes a tree, he continues in the same direction for another 20 m. He then stops, climbs on his skateboard and rides in a WESTERLY direction for 25 m before he finally stops.

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The resultant displacement of the boy when he finally stops is 10 m EAST of his initial position.

2.1 Define the term distance. (2)

2.2 Determine the initial position of the boy relative to the tree. (2)

2.3 Calculate the total distance that the boy moved. (2)

2.4 When the boy is on the skateboard, he skates at an average speed of 5 m∙s^-1. Calculate how long, in seconds, the boy is on the skateboard during the motion. (3)

2.5 The total time for the motion of the boy from his initial position until he finally stops is 40 s. Calculate his average velocity. (3)

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