Please solve these questions A stone is dropped tiom certain height which
can reach the ground in 5 sec. It is slopped after
three seconds Of its fall and then is again
released. The total time taken by the stone to
reach the ground will be
(B) 6.5 s
(D) 7.5 s
A train stopping at two stations 5 km apan takes
5 min on the .ioumey from one of the station to
the other. Assuming thal its first accelerates With
a uniform acceleration ct and then that Of
uniform retardation if units Of mass. length.
and tirne are kg, km and min respectively then
115
111
The velocity of a particle moving on the x-axis
is given by v = * + x where v is in m/s and x is
in m. Find its acceleration in rn/s* When passing
through the point x 2m
11
(D) 30
A food packet is dropped from the plane moving
horizontally velocity 50
and a
A lift starts going up from rest.
shmvn in figure. plotted against time. Time
lift comes to instantaneous rest is
(A) 4 sec
12 sec
(C) sec
TWO similar cannon simultaneously fires
identical cannon balls at target [ 2 "
in the figure. If the cannon balls have
initial speeds. Which Of the following
is true?
(A) Target 2 is hit before target I
(B) Target I is hit before 2
(C) Both are hit at the same lime
(D) information is insufficient
Two projectiles are with velcXity
at angles horizon(an and
as as shown in
