# A cyclist is travelling on a circular section of highway of radius 2500 ft at the speed of 60 mile h−1 . The cyclist suddenly applies the brakes causing the bicycle to slow at constant rate. Knowing that after 8 s the speed has been reduced to 45 mile h −1 . The acceleration of the bicycle immediately after the brakes have been applied is

Question : A cyclist is travelling on a circular section of highway of radius 2500 ft at the speed of 60 mile h−1 . The cyclist suddenly applies the brakes causing the bicycle to slow at constant rate. Knowing that after 8 s the speed has been reduced to 45 mile h −1 . The acceleration of the bicycle immediately after the brakes have been applied is

(A) $2t/s^{2}$

(B) $4.14ft/s^{2}$

(C) $3.10ft/s^{2}$

(D) $2.75ft/s^{2}$

Answer : option (B)

Solution :

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