I'm attempting to calculate acceleration for the following: A plane lands on a runway with a speed of 120 m/s, moving east, and it slows to a stop in 12.0 s. What is the magnitude and direction of the plane's average acceleration during this time interval? So far I've gotten to this point: (0m/s - 120m/s)= (-120m/s)= stuck here.. the answer must be in m/s2 (12s - 0s)               (12s)

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Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –