Constant acceleration equations Transitional Reasoning Practice

Questions

1. 1.

   A railway safety engineer analyzes the emergency braking performance of an autonomous freight train traveling along a straight track at speed $v$. When the emergency brakes are engaged, the train undergoes a uniform deceleration and slows down to $\frac{v}{2}$ over a distance of 240 m. Assuming the deceleration remains constant, how much additional distance does the train travel before coming to a complete stop?

   • A) 80 m
   • B) 120 m
   • C) 240 m
   • D) 320 m
2. 2.

   An engineer evaluating the safety systems of an automated transport pod records that it enters a braking zone at a velocity of 28 m/s along a straight track. The pod applies its brakes, producing a constant deceleration of 4.0 m/s2 until it comes to a complete stop. What distance does the pod cover specifically during the third second of braking?

   • A) 66 m
   • B) 22 m
   • C) 18 m
   • D) 16 m

Answers and step-by-step solutions appear after you finish the test.