Question

A subway train is traveling at a rate of 22.4 m/s. Brakes are applied and it slows down at a constant rate of 3.5 m/s2 until it stops at a station. Find the total distance traveled while braking.

274 m


142 m


72 m

Answer 1

1. A

2. C

3. B

4. A

5. A

6. D

7. D

8. C

9. B

10. A

Answer 2

You use the equation Final Velocity²= (Initial Velocity)² 2(Acceleration)(Distance). You plug in what you have 0²=22.4² X 2(-3.5)(D) and solve for D which is 71.68m or about 72m.