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The velocity-time graph of an object of mass m = 50 g is shown in figure.(i) The force on the object in time interval 0 to 3 s. (a) 2N (b) 1N (c) 4N (d) 3N (ii) The force on the object in the time interval 6 to 10 s. (a) 1.5N (b) 1N (c) -1.5N (d) -1N (iii) Calculate the force on the object in the time interval 3 to 6 s. (a) 3N (b) 1N (c) zero (d) 4N(iv) The acceleration of the body from 0 to 3 s. (a) 40m/s2 (b) 20m/s2 (c) 10m/s2 (d) 4m/s2 (v) The acceleration of the body from 6 to 10 s. (a) 40m/s2 (b) 30m/s2 (c) -30m/s2 (d) -40m/s2 |
Answer» (i) F = ma = 0.05kg*40m/s² = 2N(ii) -1.5N(iii) zero(iv) a = (v-u)/t = (120-0)/3 = 40m/s²(v) -30m/s²Hope it helps⬜✌️ |
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