Question

please I need correct answer​

Answer 1

Answer:

i dont know

Explanation:

Answer 2

Given

• inital velocity= 0
• acceleration= 0.1 m/sec²
• Time = 2 min

To Find

• final velocity = ?
• Distance travelled=?

Concept used

~Here the concept of equatîons of motion is used. In order to find the final velocity we will use 1st equation of motion. Then by using 3rd equatîon of motion we will calculate the distance.

Solution

» Time is given as 2min. So first we will convert minutes into seconds.

» Conversion

we know that

➜1 min = 60 sec

»By Unitary method

➜2 min = 2 × 60

➜2 min = 120 sec

According to 1st equation of motion

${\underline{\boxed{\sf{v=u+at}}}}$

»Where

• a denotes acceleration
• u denotes inital velocity
• v denotes final velocity

$\sf{ \implies v= 0+ 0.1×120} \\ \\ \sf{ \implies \green{v= 12 m/sec} }$

⚘So the final speed is 12m/sec.

According to motions 3rd equation

${\underline{\boxed{\sf{v²=u²+2as}}}}$

»Where

• s denotes distance
• a denotes acceleration
• u denotes inital velocity
• v denotes final velocity

$\sf{ \implies 12² = 0 + 2× 0.1 × s} \\ \\ \sf{ \implies s =\frac{12 ×12}{2×0.1}} \\ \\ \sf{ \implies \pink{ s = 720 \: metres}}$

⚘So the total distance travelled is 720 metre.

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