A. How long did it take the shuttlecock to fall to the bottom? 0.78 B. What was the acceleration of the shuttlecock during its fall?
- 9.81
C. What was the velocity of the shuttlecock when it hit the bottom? -7.98
(Note: This is an example of instantaneous velocity.)
D. What is the mathematical relationship between these three values?

8. Make a rule: If the acceleration is constant and the starting velocity is zero, what is the
relationship between the acceleration of a falling body (a), the time it takes to fall (t), and its
instantaneous velocity when it hits the ground (v)?

Express your answer as an equation relating v, a, and t: v=

the answer is d. 4

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answer: the correct answer is 1.

explanation: there are various process in which a radioactive nuclei decays:

1) alpha decay: in this process, a heavier nuclei decays into lighter nuclei by releasing alpha particle. the mass number is reduced by 4 units.

2) electron capture: in this decay process, a parent nuclei absorbs an electron and gets converted into a neutron. simply, a proton and an electron combines together to form a neutron. mass number does not change in this process.

3) gamma ray emission: it is a decay process in which an unstable nuclei gives excess energy by a spontaneous electromagnetic process. this decay releases . this process does not change the mass number.

4) positron emission: it is a type of decay process, in which a proton gets converted to neutron and an electron neutrino. this is also known as -decay. in this the mass number remains same.

from the above information, we see that only alpha-decay is producing a change in the mass number of the nucleus.

technology is the collection of techniques, skills, methods, and processes used in the the merriam-webster learner's dictionary offers a definition of the term: "the use of moreover, these technologies have become so complex that entire fields more recently, modern works of science fiction such as those by philip k.

explanation: