A block of mass 0.50 kg is moving with a speed of 2.00 m/s on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is
0.16 J
1.00 J
0.67 J
0.34 J
C.
0.67 J
m_{1}u_{1} + m_{2}u_{2} = (m_{1} + m_{2})v
v = 2/3 m/s
A block of mass ‘m’ is connected to another block of mass ‘M’ by a spring (mass less) of spring constant ‘k’. The blocks are kept on a smooth horizontal plane. Initially the blocks are at rest and the spring is stretched. Then a constant force ‘F’ starts acting on the block of mass ‘M’ to pull it. Find the force on the block of mass ‘m’.
mF/M
(M+m)F/m
mF/(m+ M)
MF (m+M)
C.
mF/(m+ M)
A particle is projected at 60° to the horizontal with a kinetic energy K. The kinetic energy at the highest point is
K
0
K/2
K/4
D.
K/4
A bomb of mass 16 kg at rest explodes into two pieces of masses of 4 kg and 12 kg. The velocity of the 12 kg mass is 4 ms^{−1} . The kinetic energy of the other mass is
144 J
96 J
288 J
192 J
C.
288 J
m_{1}v_{1} = m_{2}v_{2}