Determining Average Deceleration of a Car Using Equations of Motion

In summary, the conversation is about a person asking for help with a homework question involving a car's deceleration. They are given initial velocity, final velocity and displacement and are asked to apply an appropriate equation of motion to find the average deceleration, which is approximately 0.1ms-2. The person is reminded to show their attempts before asking for help and to follow the rules of the forum.
  • #1
LaurenceFS
1
0
I am stuck on this homework question can i have some help please?

A car is traveling at 13ms-1. It is allowed to slow down naturally without applying the brakes. The distance traveled in coming to rest is 640m.

Show that the average deceleration of the car is about 0.1ms-2.
 
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  • #2
Welcome to Physics Forums.
LaurenceFS said:
I am stuck on this homework question can i have some help please?

A car is traveling at 13ms-1. It is allowed to slow down naturally without applying the brakes. The distance traveled in coming to rest is 640m.

Show that the average deceleration of the car is about 0.1ms-2.
What have you tried thus far?
 
  • #3
Welcome to the board! :)

Ok, here's a little help, since it comes to rest, the final velocity should be 0m/s. Now you have initial velocity, final velocity & displacement, try applying the suitable equation of motion.

But as Hootenanny said, you need to show us your attempts before asking for any help. Take care of that and have a look at the rules. :smile:
 

FAQ: Determining Average Deceleration of a Car Using Equations of Motion

What is acceleration?

Acceleration is the rate of change of an object's velocity over time. It is measured in meters per second squared (m/s^2).

How is acceleration calculated?

Acceleration can be calculated by dividing the change in velocity by the change in time. The formula for acceleration is a = (vf - vi) / t, where a is acceleration, vf is final velocity, vi is initial velocity, and t is time.

What is the difference between acceleration and velocity?

Velocity is the rate of change of an object's position over time, while acceleration is the rate of change of an object's velocity over time. In other words, velocity tells us how fast an object is moving and in what direction, while acceleration tells us how quickly the velocity is changing.

How does acceleration affect motion?

Acceleration affects motion by changing the speed or direction of an object. If an object is accelerating, its velocity is changing, which means its motion is changing.

What factors can affect acceleration?

The factors that can affect acceleration include the force applied to the object, the mass of the object, and the friction or resistance acting on the object. These factors can either increase or decrease the acceleration of an object.

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