Saturday
April 18, 2015

Homework Help: Physics

Posted by Preston on Sunday, November 21, 2010 at 5:18pm.

A car moving at 8 m/s crashes into a barrier and stops in 0.050 s. There is a 19-kg child in the car. Assume that the child's velocity is changed by the same amount as that of the car, and in the same time period. (a) What is the impulse needed to stop the child in N*s?(b) What is the average force on the child in N? (c) What is the approximate mass of an object in kg whose weight equals the force in part (b)?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

physics - A car is moving with constant velocity. Which of the following is true...
physics - A car is moving with constant acceleration. Which of the following is ...
physics - A 2400 kg car moving at 11 m/s crashes into a tree and stops in 0.26 s...
Physics - 1) a car moving at 50km/h crashes Into the barrier and stops in 0.25 m...
Physics - A driver of a car going 90 km/h suddenly sees the lights of a barrier ...
science - if a 600 kg racing car crashes into barrier at 190 mph and it takes 3 ...
physics - a car is moving with a uniform speed of 72km/h .The driver sees a ...
physics - The driver of a car, traveling at a constant 25 m/s, sees a child ...
physics - The driver of the car traveling at a constant 25m/s sees a child ...
science - A car is travelling at 20m/s along a road. a child runs out into road...

Members