Physics, 19.08.2019 05:10 simegustachocolate

Acar moves in a straight line at 16.0 m/s for 8.0 miles, then at 30.0 m/s for another 8.0 miles.
(a)
is the car's average speed less than, greater than, or equal to 23.0 m/s?
less than 23.0 m/s
equal to 23.0 m/s
greater than 23.0 m/s
(b)
calculate the car's average speed in meters/second. (enter your answer to three significant figures.)
/s

Answers: 2

Show answers

Another question on Physics

Physics, 22.06.2019 08:50

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?

Answers: 2

Answer

Physics, 22.06.2019 18:30

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

Answer

Physics, 22.06.2019 23:30

A6.0-kilogram cart initially traveling at 4.0 meters per second east accelerates uniformly at 0.50 meter per second squared east for 3.0 seconds. what is the speed of the cart at the end of this 3.0 second interval? (1) 1.5 m/s (3) 3.0 m/s (2) 5.5 m/s (4) 7.0 m/s

Answers: 1

Answer

Physics, 23.06.2019 02:40

An air standard cycle with variable specific heats is executed in a closed system and is composed of the following four processes. 1-2 isentropic compression 100 kpa and 22°c to 600 kpa 2-3 v=constant heat addition to 1500 k 3-4 isentropic expansion to 100 kpa 4-1 p=constant heat rejection to initial state (a) show the cycle on p-v and t-s s (b) calculate the net work output per unit mass (409 kj/kg) (c) determine the thermal efficiency (47.9%)

Answers: 1

Answer

You know the right answer?

Acar moves in a straight line at 16.0 m/s for 8.0 miles, then at 30.0 m/s for another 8.0 miles.

Questions