A baby leaves a bowl of food on the floor and crawls westwards to fetch a toy placed 5 m
away. At the same time a dog walks eastwards towards the baby. It takes the baby 30 s
to reach the toy. The dog walks past the toy to eat the baby’s food in the bowl.
2.1 Define the term displacement in words. (2)
2.2 Determine the position of the dog relative to the baby before they both moved. (2)
2.3 Calculate the average velocity of the baby. (4)
2.4 If the average speed of the dog is TWICE that of the baby, calculate how long
it would take the dog to reach the food bowl from the moment the dog started
moving. (4)
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