book Maths Puzzle Numerical Ability

What is the change in velocity of a car that is traveling at 100km/h north, but is traveling 80km/h south one minute later? What is its average acceleration

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book Other Question

the lenghts of the legs of a right triangle are 7 and 24. Find the lenght of the hypotenuse And aircraft carrier follows a course that has a latitude of 288 miles north and a departure of 240 miles east in two days. Find its bearing.