Question

A train is pulling four train cars and each car has a mass of 40,000 kg. The train is accelerating at 1.1 m/s^2. What is the force produced by the train's engine car to provide this acceleration? (Ignore all friction)

211000 N
149000 N
201000 N
176,000 N

Answer 1

176,000 N

Step-by-step explanation:

Newton's second law:

∑F = ma

F = (4 × 40,000 kg) (1.1 m/s²)

F = 176,000 N

Answer 2

176,000N

Step-by-step explanation:

According to newton's second law,

Force (F) = mass (m) × acceleration(a)

Given a train pulling four cars with mass of each cars as 40,000kg, total mass of four cars will be 4×40,000 = 160,000kg

If the train accelerates at 1.1m/s²,

Force produced by the train will give;

F = 160,000×1.1

F = 176,000N