subject
Physics, 11.04.2021 02:10 janahiac09

Directions: Use the equation above to solve for the missing variable. 1.) A truck is traveling at +80 m/sec and accelerates at a constant rate of -6 m/sec2in an attempt to travel under the speed limit of 55 m/sec before he passes the police officer ahead. He passes the police officer after 4 seconds. Will the car be traveling under the 55 m/sec speed limit when he passes the police officer?

2.)A race car has the ability to constantly accelerate at +15 m/sec. At the end of a car race, the race car accelerates at its maximum acceleration for 3 seconds before crossing the finish line with a velocity of 60 m/sec. What was the initial velocity of the race car before it accelerated at its maximum rate at the end of the race?

3) A biker is biking with a velocity of +10 m/sec. After 5 seconds, he is now biking with a velocity of +25 m/sec. What was the biker’s constant acceleration during these 5 seconds?

ansver
Answers: 3

Another question on Physics

question
Physics, 21.06.2019 18:20
Which is not a step in the rock cycle?
Answers: 1
question
Physics, 22.06.2019 02:30
Acup of coffee sits on the dashboard of an automobile. the car goes around a sharp curve. even though you hold the cup still, coffee still splashes out. this can best be explained due to a) density. b) friction. c) gravity. d) inertia.
Answers: 2
question
Physics, 22.06.2019 03:30
As part of an industrial process, air as an ideal gas at 10 bar, 400k expands at steady state through a valve to a pressure of 4 bar. the mass flow rate of air is 0.5 kg/s. the air then passes through a heat exchanger where it is cooled to a temperature of 295k with negligible change in pressure. the valve can be modeled as a throttling process, and kinetic and potential energy effects can be neglected. (a) for a control volume enclosing the valve and heat exchanger and enough of the local surroundings that the heat transfer occurs at the ambient temperature of 295 k, determine the rate of entropy production, in kw/k. (b) if the expansion valve were replaced by an adiabatic turbine operating isentropically, what would be the entropy production? compare the results of parts (a) and (b) and discuss.
Answers: 3
question
Physics, 22.06.2019 03:30
Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec
Answers: 1
You know the right answer?
Directions: Use the equation above to solve for the missing variable. 1.) A truck is traveling at +...
Questions
question
Mathematics, 21.01.2021 19:50
question
Health, 21.01.2021 19:50
question
Mathematics, 21.01.2021 19:50
question
Mathematics, 21.01.2021 19:50
question
Mathematics, 21.01.2021 20:00