Register
It takes 160 kj of work to accelerate a car from 24.0 m/s to 27.5 m/s. what is the car's mass?
114k views
5 votes
It takes 160 kj of work to accelerate a car from 24.0 m/s to 27.5 m/s. what is the car's mass?

User Yonosoytu
by
6.3k points

1 Answer

5 votes
Work-Energy :W = 1/2 m ( Vf^2 -Vo^2 )
Vo = 24.0 m/s Initial speed
Vf = 27.5 m/s Final speed

W = 1/2 m ( Vf^2 -Vo^2 )
160 kj = 1/ 2 m ( 27.5^2 -24.0 ^2)
160kj = 4680 x m
convert kilo joules to jeoules 160000 j = 4689 xm
m = 160000 j/4689
m = 34.18 kg
User Piyush Marvaniya
by
6.8k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

7.1m questions

9.5m answers

Other Questions

What is the meant by the frequency of a wave? What is the unit?
Is this true or false ethics deals with morals and values and can be measured and tested using the scientific method. Thank you for answering and your help
How does the doppler effect change wave speed?
Can I write a narrative writing how the first time I fell in love with blue eyes?
If a cotton ball is dropped from 12 meters with air resistance, what will be the velocity and acceleration at t = 1.00 s?
Link Copied!