4. An aeroplane lands at 216 km/hr and stops after covering a runway of 2 km. Calculate the
acceleration and the time, in which it comes to rest.
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Answer:
Explanation:
Using equation (1) with given values, 0^2-(216)^2(km/h)^2=2 a (2 km). Therefore, a=-11664 km/h^2 =-11,664(1000 m)/(3600s)^2=-0.9 m/s^2.
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