Mathematics: 11. a skateboarder with a mass of 35 kg ends up with a final velocity of 7 m/s after a push of 380 joules of work. what was the skateboarder s initial velocity?

11. a skateboarder with a mass of 35 kg ends up with - id11354643606, skylarjohnson2683

Ответ:

ineedhelp2285

15.01.2022

The law of conservation of energy. The energy due to work performed on the skateboarder is converted into kinetic energy such that:

Work=Kinetic Energy

So 380=(1/2)(35)(7-Vo). I don’t have a calculator so..

Assumptions we made:
No energy loss, all work went into the energy of motion of the skateboarder. In the real world, this is not possible because some of the energy can be loss through friction of the skateboarder to the ground etc.

0,0(0 оценок)

Ответ:

gbrightwell

05.08.2020

Mathematics

We need to find the unit rate, that is kilometer per hour

The unit rate is 3/4 km/hr

kilometer, km

Hour, hr

unit rate

$= \frac{number \: of \: kilometer}{number \: of \: hours}$

$= \frac{1 \div 4}{1 \div 3}$

$= 1 \div 4 \times 3 \div 1$

= 3/4 km/hr

0,0(0 оценок)

11. a skateboarder with a mass of 35 kg ends up with a final velocity of 7 m/s after a push of 380
joules of work. what was the skateboarder's initial velocity?

Ответ:

Ответ:

Ask your question to the AI advisor

More tips

Answers on questions: Mathematics

Ask an AI advisor a question

11. a skateboarder with a mass of 35 kg ends up with a final velocity of 7 m/s after a push of 380 joules of work. what was the skateboarder's initial velocity?

Ответ:

Ответ:

Ask your question to the AI advisor

More tips

Answers on questions: Mathematics

Ask an AI advisor a question

11. a skateboarder with a mass of 35 kg ends up with a final velocity of 7 m/s after a push of 380
joules of work. what was the skateboarder's initial velocity?