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(b) E/4
(b) 8J
(b) 10⁴J
(a) 0.5
(c) 125%
A particle is projected at an angle of 60° to the horizontal with a kinetic energy E. The kinetic energy at the highest point is
(b) E/4
(b) E/4
See lessA spring of force constant 800 N/m has an extension of 5 cm. The work done in extending it from 5 cm to 15 cm is
(b) 8J
(b) 8J
See lessA body of mass 50 kg is at rest. The work done to accelerate it by 20 m/s in 10 s is
(b) 10⁴J
(b) 10⁴J
See lessA block having mass ‘m’ collides with another stationary block having mass 2m. The lighter block comes to rest after collision. If the velocity of first block is V, than the value of co-efficient of restitution will be
(a) 0.5
(a) 0.5
See lessIf the linear momentum is increased by 50%, then kinetic energy will increase by
(c) 125%
(c) 125%
See less