Saturday
April 19, 2014

Homework Help: Pysics Word Problem

Posted by Emma on Wednesday, August 29, 2007 at 4:20pm.

4. An automobile is traveling at 30 km/hr. It accelerates at 3 m/s2 until it has covered 100 meters.. What is its new velocity?

I asked my teacher on what formula I should use and said I should use this one: V^2= Vo^2+2ax (V^2 is the velocit, Vo is the initial velocity, a is accerlation and x distance

I used that formuala and got 668.90 m/s

V^2= (8.3 m/s)^2+2(3m/s^2)(100 m)=668.90 m/s

I converted 30km/hr by doing this:
(30 km/hr)(1000 m/km)(1hr/3600)=8.3m/s


Now I understand how to get 25.9 m/s, but now how to I convert it to 93.2 km/hr?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Physics - Having trouble determ the formulas for the follow problems. 2. If an ...
Science - I have some equations that I would like checked. Thanxs! 1. An ...
Physics - Could you please check my answers and units. Thanxs! 1. An automobile ...
Physics - Could you please check my answers and units.Also, help me with 3 and 4...
Physics Word Problem - 4. An automobile is traveling at 30 km/hr. It accelerates...
Physics - At time = 0 an automobile already traveling at 30 km/hr. accelerates ...
Physics - An automobile accelerates from rest at 2.4 m/s2 for 29 s. The speed is...
physics - 1.The speed of a train increased from 15 mi/hr to 25 mi/hr in a ...
physics URGENT! PLEASE - Figure the resultant velocity of a plane that is ...
physics - A motorcycle traveling 91.0 km/hr approaches a car traveling in the ...

Search
Members