sarsar23 sarsar23

17-07-2016
Physics

contestada

A 4,000-kg car traveling at 20 m/s hits a wall with a force of 80,000 N and comes to a stop. What was the impact time?

Respuesta :

17-07-2016

deceleration a=Δv/t -> t=Δv/a
Δv=20 m/s (from 20m/s to 0m/s)
from Newton's second law of motion: a=F/m
F=80000N
m=4000kg
a=80000/4000=20 m/s^2

t=20m/s / 20 m/s^2 = 1s

Answer Link

Otras preguntas

What is the significance of grandma's funeral grapes of wrath?

use the Distributive property to find the product 12 × 2 1/2

do y=|x-1| shift down or left

how is shakespeare presenting states of mind in act 2 scene 2 macbeth

help please will give brainliest

As juliet awaits her new husband what news does the nurse bring her

Blood is mostly made of _____. A. red blood cells B. white blood cells C. platelets D. plasma

Approximately what percentage of u.s. households has high-speed broadband connections? 99 percent 25 percent 10 percent 75 percent 50 percent

I REALLY NEEEEEDDDD THISSSSS

Melvin and frank caught a lizard in their backyard. Its body is 10/8cm long,and it's tail is 10/8cm long. What is the length of the lizards body and it's tail a