A car enters a right turn that is 90◦ and part of a circle of radius r. The car exits the turn after time t and with the same speed as it entered it. Averaged over the time interval t, which of the following statements is true? a) The averaged centripetal acceleration is t2/r2. (b) the averaged centripetal acceleration is (π2r)/(4t2) (c) The averaged tangential acceleration is zero. (d) the averaged tangential acceleration is (πr)/(3t2).   A) Statements (a) and (c)B) Statements (a) and (d)C) Statements (b) and (c)D) Statements (b) and (d)

Question

A car enters a right turn that is 90◦ and part of a circle of radius r. The car exits the turn after time t and with the same speed as it entered it. Averaged over the time interval t, which of the following statements is true? a) The averaged centripetal acceleration is t2/r2. (b) the averaged centripetal acceleration is (π2r)/(4t2) (c) The averaged tangential acceleration is zero. (d) the averaged tangential acceleration is (πr)/(3t2).

 

A) Statements (a) and (c)
B) Statements (a) and (d)
C) Statements (b) and (c)
D) Statements (b) and (d)

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