Question

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Answer 1

Area covered under the last ten seconds:-

Distance travelled = Area under graph

∴ Distance travelled = ar(△ABC)

We know,

$\boxed{Area_{triangle} = \frac{1}{2} \times b \times h}$

∴ ar(△ABC) = ½(AC)(AB)

⇒ ar(△ABC) = ½(20 - 10 s)(20 m/s)

⇒ ar(△ABC) = ½(10)(20) m

⇒ ar(△ABC) = (10)(10) m

⇒ ar(△ABC) = 100 m (C).

More:-

• Actually, area under the velocity - time graph shows magnitude of Displacement. Since the body travels in a straight path, the magnitude of displacement will be equal to that of the distance travelled.
• Slope of v-t graph shows acceleration.

$Slope = \frac{y_2 - y_2}{x_2 - x_1}$

• Also, acceleration = $tan(θ)$ of the graph.

Answer 2

Answer:

nice to meet you

Explanation:

morning

according to the questions that you are asking I will assume that you are in class 10th as same as me

ask any doubt you have and I'll try to solve it

all the best for your boards