Page 1 of 2 Free-fall QuickCheck Motion Problem Set Page 5 of 13 y (m) t (s) ||
ID: 1652580 • Letter: P
Question
Page 1 of 2 Free-fall QuickCheck Motion Problem Set Page 5 of 13 y (m) t (s) || (i) The position is neither increasing nor decreasing. (ii) The velocity is zero. (ili) The position is increasing, and the velocity is increasing (iv) The position is increasing, and the velocity is decreasing (v) The position is decreasing, and the velocity is decreasing (vi) The position is decreasing, and the velocity is increasing (vi) The position is increasing, more and more slowly. (vili) The position is decreasing, more and more quickly (ix) The acceleration is positive. (x) The acceleration is negative. Need Help? Read MasterExplanation / Answer
The motion is close to a sin function akin to SHM with period approx = 4 s
1. B and E are extreem values of the sin curve , B is max and E min, vel. no change.
2. B, E , vel. dx/dt is zero at max and min pos.
3. none, as the position is a sine curve vel is always a Cosine curve and pos and vel do not go together.
4. A, F psotion is increasing, vel. is a cos curve and hence it will dcrease whn sine curve increases.
5. none, same reason as 3.
6. C, D position is decresing but vel. increases as it is a cosine curve and increases when sin curve is decreasing.
7. A, It is closer to the peak pos, and the velocity is decreasing hence the pos. increases slower.
8. C, The position is dcresing quickly aas the slope is more -ve.
9. C,D, acceleration is sine curve and it is -d2x/dt2, it is opposite to with pos.
10. A,F acceleration is +ve fro the same reason as 9,
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