Category: Work And Energy

A. always positive
B. always negative
C. positive only for small frictional force
D. positive only for large frictional force

A. change in its K.E always
B. change in its P.E always
C. change in its K.E and change in its P.E
D. neither change in K.E and nor change in its P.E

A. displacement
B. acceleration
C. power
D. energy

A. Earth
B. Neptune
C. Jupiter
D. Moon

A. Proton
B. electron
C. neutron
D. a-particle

A. sun
B. earth
C. both A and B
D. moon

A. momentum increases 4 times and K.E increases 2 times
B. momentum and K.E. remain same
C. momentum increases 2 times and K.E increases constant
D. momentum increases 2 times and K.E increases 4 time

A. 36 x 106 J
B. 36 x 1012 J
C. 36 x 109 J
D. 36 x 108 J

A. [ML2T-3]
B. [ML2T-2]
C. [ML2T3]
D. none of these

A. friction
B. electric
C. gravitational
D. magnetic