When a train first starts going down the railroad, it is very difficult for it to get going. When it comes to a stop, it has a hard time slo

Question

When a train first starts going down the railroad, it is very difficult for it to get going. When it comes to a stop, it has a hard time slowing down. Why is this?

A: balanced forces
B: unbalanced forces
C: inertia

in progress 0
Thái Dương 4 years 2021-09-04T05:40:18+00:00 1 Answers 3 views 0

Answers ( )

  1. thanhha
    0
    2021-09-04T05:42:15+00:00
    Reply

    The option ( c ) is correct

    Explanation:

    When we apply the force on any body , the inertia comes into play . It is the tenancy of the the body to oppose the force which tends to change its state .

    In first case the train tries to change its state from rest to motion . Thus the inertia of rest opposes this tendency.

    In the second case , the train tries to come from motion to the state of rest . Thus again , inertia opposes it .

    Therefore inertia is the factor which creates difficulty in both case . Hence option ( c ) is correct  

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )