Question

The engines of a freight train can deliver 233.9 kN of force to accelerate the train and the resulting acceleration is 0.3148 m/s^2.

a. What is the mass of the train?
b. What is the weight of the train?

Answer 1

Answer:

Correct option is B)

Given that,

Mass of train, m=2.05×10

6

Kg

Time, t=5minutes=300s

v=25m/s

u=5m/s

Acceleration,

a=

t

v−u

a=

300

25−5

a=

30

2

=

15

1

m/s

2