Question

A car increases its speed at a constant rate of 1.5 m/s2 as it rounds a curve of radius 200 m. The magnitude of the total acceleration is 2.5 m/s2 . What is the car’s speed at this instant?

Answer 1

Answer:

The car's instant speed is 20m/s

Explanation:

a = at + an

The above equation is a vector equation

a is the resultant acceleration

at   is the tangent acceleration

an  is the normal acceleration

See the attached diagram for solution

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