Q.1.
A stone falls under gravity. It covers distances h1, h2, h3 in the first 5 seconds, next 5 seconds and the next 5 seconds respectively. The relation between h1, h2 ,h3 is.. [NEET 2013]
-
17%
a) h1 =2h2 =3h3
-
67%
b) h1 = h2/3 = h3/5
-
17%
c) h2 =3h1 and h3 = 3h2
-
0%
d) h1 =h2 =h3
Explanation
Q.2.
A particle of unit mass undergoes one-dimensional motion such that its velocity varies according to v(x) = βx-2n, where β and n are constants and x is the position of the particle. The acceleration of the particle as a function of x, is given by : … [ AIPMT 2015]
-
0%
a) -2nβ2 x-4n+1
-
25%
b) -2nβ2 x-2n-1
-
75%
c) -2nβ2 x-4n-1
-
0%
d) -2β2 x-2n+1
Explanation
Q.3.
Two cars P and Q start from a point at the same time in a straight line and their positions are represented by xp(t) = at + bt2 and xQ (t) = ft – tAt what time do the cars have the same velocity ? [ NEET II – 2016]
-
67%
a)
-
0%
b)
-
33%
c)
-
0%
d)
Explanation
