A car travels counterclockwise around a flat circle of radius 0.25 km at a constant speed of 20 m/s. When the car is at point A as shown in the figure, what is the car's acceleration? 
Definitions:
Les Très Riches Heures
Les Très Riches Heures is a highly celebrated illuminated manuscript of the 15th century, known for its detailed and vibrant illustrations, commissioned by the Duke of Berry.
Jean, Duke of Berry
A French nobleman known for his patronage of the arts and commission of the richly illuminated manuscript "Les Très Riches Heures du Duc de Berry."
Noble Patron
A member of nobility who supports, sponsors, or endorses artists and their work.
Relief Method
A method in sculpture where the carved features are left connected to a solid base made of the same substance, resulting in a prominent relief.
Q2: A 4.0-kg block is lowered down a
Q2: In an isolated system of two bodies
Q3: Ray says that interference effects cannot be
Q8: A far-sighted student has a near point
Q11: Two stations running TCP/IP are engaged in
Q31: A 3.0-kg block is dragged over a
Q40: In a demonstration, a 4.00 cm<sup>2</sup> square
Q59: A stunt pilot performs a circular dive
Q59: One long wire carries a current of
Q75: A chair is placed on a rug.