The force $F$ acting on a particle of mass $m$ is indicated by the force-time graph shown below. The change in momentum of the particle over the time interval from zero to $8 \mathrm{s}$ is

A large truck and a car, both moving with a velocity of magnitude $v$, have a head-on collision and both of them come to halt after that. If the collision lasts for $10 \mathrm{s}$ then

(i) The car will experience the greater force of impact exerted by the truck
(ii) The truck will experience the greater momentum change
(iii) Car will experience the greater average acceleration than truck.

Three identical bodies, each of mass $m$, are pushed by a force $F$ on a frictionless table as shown in figure.