Thanx for everyone who has helped so far.(adsbygoogle = window.adsbygoogle || []).push({});

(This is not homework, I'm doing problems to study for my final that is in less than 3 hours).

This next question i'm having a hard time with is...

A 2150-kg truck is traveling along a straight,level road at a constant speed of 55.0km/h (15.8m/s) when the driver removes his foot from the accelerator. After 21.0 seconds, the truck's speed is 33.0 km/h (9.2m/s). What is the magnitude of the average net force acting on the truck during the 21.0 second interval?

The answer is 626 N but I have no idea on how to get to it.

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

Dismiss Notice

Join Physics Forums Today!

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

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

# Homework Help: Back with more questions

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