Second Opinion Needed: Car Acceleration, Force & Rotation Questions

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SUMMARY

The discussion centers on a physics problem involving a car with a mass of 1000 kg accelerating from 0 to 80 km/h in 10 seconds. The acceleration is calculated to be 2.22 m/s², and the distance covered in this time is 11.11 meters. The force exerted by the engine to achieve this acceleration is determined to be 2220 N. Additionally, the rotational speed of the drive wheels, which have a diameter of 500 mm, is found to be 33.33 revolutions per minute (RPM) when the car travels at 80 km/h.

PREREQUISITES
  • Basic understanding of Newton's second law of motion
  • Familiarity with kinematic equations
  • Knowledge of rotational motion concepts
  • Ability to convert units (e.g., km/h to m/s)
NEXT STEPS
  • Study Newton's second law of motion in detail
  • Learn about kinematic equations for uniformly accelerated motion
  • Explore the relationship between linear and rotational motion
  • Investigate unit conversion techniques for speed and distance
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This discussion is beneficial for physics students, educators, and anyone interested in understanding the principles of motion, force, and rotational dynamics in automotive contexts.

phil555
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Homework Statement



Could I please have peoples opinions on the below?

1. A car has a mass of 1000 kg and travels from 0 to 80 km h–1 in 10 s. It
then keeps moving at 80 km h–1.
(a) What is the magnitude of the acceleration in the first 10 s?
(b) How far does it move in the first 10 s?
(c) What force does the engine of the car provide to achieve this
acceleration?
(d) If the two drive wheels of the car are 500 mm in diameter, what is
their rotational speed when the car is traveling at 80 km h–1?

Homework Equations





The Attempt at a Solution


 

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Physics news on Phys.org
This belongs in the introductory physics section.
 
Not the reply I as after LOL. But fair do's.
 

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