How would you calculated the distance travelled by the car using its velocity-time graph
1 answer:
Answer:
Measure the area under the graph.
Explanation:
To calculate the distance traveled by a car (or anything) using a velocity-time graph, just measure the area under the graph! This is super easy. :)
I will use the graph below as an example. If you needed to find the distance traveled from 4 seconds to 10 seconds, you would just find the area under those two points. The dark blue is the area we need to find the area of.
The area of a rectangle is a A = bh
A = bh
A = (6 s)(8 m/s)
A = 48 meters
If you wanted to find the area from 0 seconds to 4 seconds, you would find the area of the light blue triangle.
A = 1/2bh
A = 1/2(4 s)(8 m/s)
A = 16 meters
If you wanted to find the area from 0 seconds to 10 seconds, you would just add these two areas!
A1 + A2
48 meters + 16 meters = 64 meters
I really hope this helped! :)
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Answer:
LED bulb = 0.145 A
Incandescent bulb = 0.909 A
CFL bulb = 0.218 A
Explanation:
Given:
Power rating of LED bulb (P₁) = 16 W
Power rating of incandescent bulb (P₂) = 100 W
Power rating of CFL bulb (P₃) = 24 W
Terminal voltage across the circuit (V) = 110 V
We know that, power is related to terminal voltage and current drawn as:
Express this in terms of 'I'. This gives,
Now, calculate the current drawn in each bulb using their respective values.
For LED bulb,
So, current drawn is given as:
For incandescent bulb,
So, current drawn is given as:
For CFL bulb,
So, current drawn is given as:
Therefore, the currents drawn through LED bulb, incandescent bulb and CFL bulb are 0.145 A, 0.909 A and 0.218 A respectively.