Question

what is average of 1.9 kg, 4.9 kg, 2.2Kg and 7.1 kg? ​

Answer 1

Step-by-step explanation:

By the work-kinetic energy theorem,

W=ΔK=

2

1

mv

f

2

−

2

1

mv

i

2

=

2

1

(2.0kg)((6.0m/s)

2

−(4.0m/s

2

))

=20J

Answer 2

In context to question asked,

We have to determine the average of the given weights.

As per question,

We have,

Weights = 1.9 Kg, 4.9 Kg, 2.2 Kg and 7.1 Kg.

As we know that,

Average of any number can be determining by finding the sum of all given numbers and divide it by total numbers.

So, average will be calculated by adding the total weights and dividing it by 4.

So, we will get,

$Average = \frac{1.9+4.9+2.2+7.1}{4}\\=> Average = \frac{16.1}{4} \\=>Average = 4.025\:Kg$

Hence, average of given weight will be 4.025 Kg.