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(a) 135
(d) 1:4
(c) Total linear momentum
(c) 100 J
(b) 5m s⁻¹
A position dependent force, F = 7 – 2x + 3x² N acts on a small body of mass 2 kg and displaces it from x = 0 to x = 5 m. The work done in joule is
(a) 135
(a) 135
See lessTwo bodies with kinetic energies in the ratio 4 : 1 are moving with equal linear momentum. The ratio of their masses is
(d) 1:4
(d) 1:4
See lessDuring inelastic collision between two bodies, which of the following quantities always remain conserved
(c) Total linear momentum
(c) Total linear momentum
See less300 J of work is done in sliding a 2 kg block up on inclined plane of height 10 m. Work done against friction is (g = 10 ms–²)
(c) 100 J
(c) 100 J
See lessA child is sitting on a swing. Its minimum and maximum heights from the ground 0.75 m and 2 m respectively, it’s maximum speed will be
(b) 5m s⁻¹
(b) 5m s⁻¹
See less