(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A truck carrying a 37 kg crate accelerates uniformly from rest to 77.5 km/hr in 12.2 s. Calculate the work done on the crate by the truck.

2. Relevant equations

W=Fcos[tex]\theta[/tex][tex]\Delta[/tex]D

3. The attempt at a solution

I first changed 77.5 km/hr to 21.257 m/s. Then I multiplied 21.257 m/s by 12.2 s to get the distance which is 259.3354 m. Then I multiplied 37 kg by 9.81 m/s/s to get the force, which was 362.97 N. When I put them into the equation ( I put theta as 0) I get 94130.970 J. My teacher looked at it and said it was wrong and I am not sure what I need to do to fix it? Any ideas or something I am missing?

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Work Problem

**Physics Forums | Science Articles, Homework Help, Discussion**