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

A lorry of a mass 1500kg increases its velocity from 12m/s to 20m/s.

2. Relevant equations

a) calculate the change in momentum of the lorry.

b) The time taken for this change in velocity id 2 minutes. Calculate the average resultant force applied on the lorry.

3. The attempt at a solution

I worked out part a) by using the formula momentum= mv and got the ans 12000kgm/s

but i dont know how to work out part b.

Does anyone know how ?

**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: A simple motion question ?

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