Question

What is an example of Newton’s second law of motion?

a. the net force acting on an accelerating train is zero.

b. a heavy train and a lighter train with the same number of engines have equal acceleration.

c. the net force acting on a train moving at a constant velocity is greater than zero.

d. a heavy train requires multiple engines applying force on it to accelerate.

Answer 1

Answer: D

Step-by-step explanation:

An accelerating train *will* have net force. so its not A

B is also incorrect because mass is part of the a = f / m formula.

C is incorrect because net force with constant velocity is actually 0.

D is a correct statement though