Question

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.

Answer 1

A

Step-by-step explanation:

V1=25m/s

V2=10m/s

t=240s

a=(V2-V1)/t

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

a= -0.0625 m/s2