A train approaching a crossing changes speed from 25 m/s to 10 m/s in 240 s. How can the train's

acceleration be described?

a. The train's acceleration is negative.

b. The train is not accelerating.

c. The train will come to rest in 6 minutes.

d. The train's acceleration is positive.

Question

16 February, 11:40

+4

Answers (1)

Know the Answer?

Carl Kelley · Answer 1

A

Explanation:

V1=25m/s

V2=10m/s

t=240s

a = (V2-V1) / t

a = (10m/s-25m/s) / 240s

a = - 0.0625 m/s2

A train approaching a crossing changes speed from 25 m/s to 10 m/s in 240 s. How can the train'sacceleration be described?a. The train's acceleration is negative.b. The train is not accelerating.c. The train will come to rest in 6 minutes.d. The train's acceleration is positive.