Question

why we fall backward direction when car sudden start​

Answer 1

Inertia in a moving bus when the brake is applied

Inertia in a moving bus when the brake is appliedSimilarly, the passenger tends to fall back when the bus accelerates from rest because when the bus accelerates, the passenger's inertia tends to oppose the bus's forward motion. Hence, the passenger tends to fall back when the bus accelerates forward.

Answer 2

Answer:

Due to inertia of body. Which resist the forward acceleration by moving the body backwards as inertia enables the body to remain in its original state either rest or motion.

hope this will help you