markl77
New member
- Joined
- Feb 5, 2017
- Messages
- 33
Okay so I need a kind of way to do these specific questions
Object A travels at a constant velocity of 2.0m/s east, object B travels in the same direction at a constant velocity of 3.0 m/s. If object B starts 1 minute after object A, how long will it take object B to catch object A?
I tried to start by like averaging them? but I don't even remember where to start / how to do these questions at all.
anyways, I tried finding the avg velocity which is 5.0m/s , then I think I found the average displacement by using the time (60s) multiplied by the avg velocity to get 300m...
then I tried just finding the displacement of object A which I found to be 120m. If B starts 60s after A, the question is asking for how long it would take for B's displacement to equal A's displacement ...
I tried by using the formula d=vt for B's time at 120 metres to see where they would meet but I got 40s
120m=3.0m/s(t)
40s=t
that's the wrong answer..
Object A travels at a constant velocity of 2.0m/s east, object B travels in the same direction at a constant velocity of 3.0 m/s. If object B starts 1 minute after object A, how long will it take object B to catch object A?
I tried to start by like averaging them? but I don't even remember where to start / how to do these questions at all.
anyways, I tried finding the avg velocity which is 5.0m/s , then I think I found the average displacement by using the time (60s) multiplied by the avg velocity to get 300m...
then I tried just finding the displacement of object A which I found to be 120m. If B starts 60s after A, the question is asking for how long it would take for B's displacement to equal A's displacement ...
I tried by using the formula d=vt for B's time at 120 metres to see where they would meet but I got 40s
120m=3.0m/s(t)
40s=t
that's the wrong answer..
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