![Physics](/tpl/images/cats/fizika.png)
Physics, 16.10.2019 21:30, seanjung1128
An athlete with a mass of 65.5 kg is in a cross country race, and at one instant he has a speed of 4.20 m/s. (a) what is his kinetic energy at this instant? kei = j (b) if he wishes to doubles his speed to reach the finish line, his kinetic energy will change by what factor? kef kei =
![answer](/tpl/images/cats/otvet.png)
Answers: 2
Other questions on the subject: Physics
![image](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 17:00, laurentsupreme
In a closed system, the total energy prior to an energy transformation is the total energy after. a. equal to b. unrelated to c. greater than d. less than
Answers: 2
![image](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 13:30, kuddlebugsmommy
The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?
Answers: 1
![image](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 15:40, byronanderson
If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.
Answers: 1
![image](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 18:30, ochoanene822
Which of the following is not a means to accelerating? question 4 options: a)increase speed b)remain still c)decrease speed d)change direction
Answers: 2
Do you know the correct answer?
An athlete with a mass of 65.5 kg is in a cross country race, and at one instant he has a speed of 4...
Questions in other subjects:
![Konu](/tpl/images/cats/mat.png)
Mathematics, 20.09.2020 08:01
![Konu](/tpl/images/cats/mat.png)
Mathematics, 20.09.2020 08:01
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/User.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 20.09.2020 08:01
![Konu](/tpl/images/cats/en.png)
English, 20.09.2020 08:01
![Konu](/tpl/images/cats/en.png)
English, 20.09.2020 08:01
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mkx.png)
Arts, 20.09.2020 08:01
![Konu](/tpl/images/cats/mat.png)
Mathematics, 20.09.2020 08:01