Choose the following which is COMPLETELY correct:
1 answer:
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Answer:
Part A) Not collide
Part B) k = 4
Part C) Particle B is moving fast.
Step-by-step explanation:
Two particles move in the xy-plane. At time, t
<u><em>Position of particle A:-</em></u>
<em><u>Position of particles B:-</u></em>
Part A) For k = -6
Position particle A, (5t-5,2t+6)
Position of particle B,
If both collides then x and y coordinate must be same
Therefore,
- For x-coordinate:
5t - 5 = 4t
t = 5
- For y-coordinate:
The value of t is not same. So, k = -6 A and B will not collide.
Part B) If both collides then x and y coordinate must be same
- For x-coordinate:
5t - 5 = 4t
t = 5
- For y-coordinate:
Put t = 5
Hence, if k = 4 then A and B collide.
Part C)
Speed of particle A,
Speed of particle B,
At t = 5
Hence, Particle B moves faster than particle A