Answer:
.25 m/s
Explanation:
We shall use the law of conservation of momentum . We do not use law of conservation of mechanical energy because in such cases there is loss of energy.
Momentum = mass x velocity
Initial momentum of arrow and block
= .15 x 30 +0 = 4.5 J
If final velocity of block be V
Total final momentum of both arrow and block
= .15 x 25 + 3 V
= 3.75 +3V
So
3.75 + 3 V = 4.5
V = .25 m/s
Answer:
A
Explanation:
<em>a_c</em><em> </em><em>=</em><em> </em><em>v</em><em>^</em><em>2</em><em>/</em><em>r</em>
<em>v</em><em> </em><em>=</em><em> </em><em>sqrt</em><em>*</em><em>a_c</em><em> </em><em>×</em><em> </em><em>r</em><em>*</em>
<em>v</em><em> </em><em>=</em><em> </em><em>sqrt</em><em> </em><em>*</em><em> </em><em>1</em><em>8</em><em> </em><em>×</em><em> </em><em>9</em><em>*</em><em> </em>
<em>v</em><em> </em><em>=</em><em> </em><em>9</em><em>×</em><em>sqrt</em><em> </em><em>*</em><em>2</em><em>*</em>
<em>v</em><em> </em><em>=</em><em> </em><em>1</em><em>2</em><em>.</em><em> </em><em>7</em><em> </em><em>m</em><em>/</em><em>s</em>
Jake was playing making a paper airplane, after making he kept it on the table and went to have food.
Suddenly his brother saw the plane and threw it in the air, The airplane kept flying for about 3m/s and it hit his mother and due to the force the plane stopped.
{kept in on the table>rest
brother threw the plane>moving
it hit his mother>force that stopped it}
(mark me brainliest if you're satisfied with my answer)
I don’t fully understand this question but imma say more sun in summer