A furniture truck is moving along a plane road with
constant velocity. An object drops from the midpoint
of the ceiling inside the truck. What will be
the position of object after landing on the floor?
A One cannot say without knowing the velocity of
the truck.
B Exactly on the point below the mid-point of the
ceiling.
C Ahead of the point exactly below the mid-point
of the ceiling.
D Behind the point exactly below the mid-point of
the ceiling.
Ans 6:
Class : Class 7
the answer is D as the position of the truck will change and the object will be there . I got it correct
Ans 7:
Class : Class 7
The answer should be "c" as 'ahead' means toward the direction of the moving truck, but still option B is wrong
Ans 12:
Class : Class 7
The answer is Option B, Because of the inertia the object falls exactly on the point below the midpoint of the ceiling. If instead of constant velocity there was acceleration, Then option D would be correct if acceleration was positive, if it was negative then option C If zero in this case it is option B.