Register
find the work done by the engine of a car which moves at an acceleration of 3 m / s2 for 8s. the mass of the car is 1400 kg, while the coefficient of fecundation of its wheels with the road is 0.03.​
23.7k views
15 votes
find the work done by the engine of a car which moves at an acceleration of 3 m / s2 for 8s. the mass of the car is 1400 kg, while the coefficient of fecundation of its wheels with the road is 0.03.​

User Anoopknr
by
5.4k points

2 Answers

1 vote

Step-by-step explanation:

so that u multiple in this formula

find the work done by the engine of a car which moves at an acceleration of 3 m / s-example-1
User Yashar Aliabbasi
by
4.7k points
5 votes

Answer:

  • 362.88 kJ

Step-by-step explanation:

Given

  • a = 3 m/s²
  • t = 8 s
  • m = 1400 kg
  • μ(k) = 0.03

Finding Displacement

  • S = ut + 1/2at²
  • S = 0 + 1/2(3)(8)²
  • S = 32(3) = 96 m

Finding Net Force

  • Applied Force (F) = ma = 1400 x 3 = 4200 N
  • Friction Force (f) = μmg = 0.03 x 1400 x 10 = 420 N
  • Net Force = F - f = 4200 - 420 = 3780 N

Work Done

  • W = FS = 3780 N x 96 m
  • W = 362880 J
  • W = 362.88 kJ
User Maggy Hillen
by
4.7k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

5.1m questions

6.7m answers

Other Questions

A space shuttle is approaching the surface of the moon to land. It approaches the moons surface with an initial velocity of 28m/s and is slowing at a rate of -2m/s^2. Show all work and units for problems.
________ is a measure of the internal energy that has been absorbed or transferred from one body to another, often due to a difference in temperature.
5. What happens to the arrangement of water molecules as ice melts? A Molecules gain enough energy to escape as vapor. B Molecules release enough energy to escape as vapor. C Molecules gain enough energy
A 2.0-N force acts horizontally on a 10-N block that is initially at rest on a horizontal surface. The coefficient of static friction between the block and the surface is 0.50. Suppose that the block now
You’re on a team performing a high-magnetic-field experiment. A conducting bar carrying 4.1 kA will pass through a 1.3-m-long region containing a 12-T magnetic field, making a 60° angle with the field.
Link Copied!