Answer:
unmmmmmmmm I think the answerA
Percent error is the difference between the experimental value and theoretical value and measures the accuracy of the result found. The larger the error, lesser is the accuracy and vice versa.
Solution:
It is a mathematical way of showing accuracy
The higher the percent error, the less accurate the data set,
Answer:

Explanation:
Force 1 
Force 2 
Acceleration at stage 2 
Generally the weight of the Craft W is given as
W= upward force(thrust)
Therefore

Answer:
40.53 kg
Explanation:
Juggles 's mass = Mj
Bangles 's mass = 70 kg
Potential Energy is the Energy that an object gets due to its height of location
<em>Potential Energy = mass * gravitational acceleration * height</em>
Juggeles' s Potential Energy = Bangles potential energy
Mj * g * 3.8 = 70 * g * 2.2
Mj = 40.53 kg