Question

if u bar is equal to two ICAP - 2 J cap + 3 k cap and the final velocity is equals to two ICAP - 4 j cap + 5 k cap and it is covered in a time of 10 seconds find the acceleration vector ​

Answer 1

Answer:

Acceleration= (-2j^+2k^)/10= -0.2j^+0.2k^

Explanation:

That value will be achieved by using the formula Δv/t.

Δv=v(bar)-u(bar)=(2-2)i^ +(-4+2)j^+(5-3)k^

Answer 2

The acceleration vector is $a=\dfrac{1}{5}(-j+k)$.

Explanation:

It is given that,

Initial velocity, $u=(i-2j+3k)\ m$

Final velocity, $v=(i-4j+5k)\ m$

Time, t = 10 s

Let a is the acceleration vector. It is equal to the charge in velocity per unit time. It is given by :

$a=\dfrac{v-u}{t}$

$a=\dfrac{(i-4j+5k)-(i-2j+3k)}{t}$

$a=\dfrac{-2j+2k}{10}$

$a=\dfrac{1}{5}(-j+k)$

So, the acceleration vector is $a=\dfrac{1}{5}(-j+k)$. hence, this is the required solution.

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