Question on car speed and distance.

AI Thread Summary
A car with constant acceleration covers 58 meters in 6.2 seconds, reaching a speed of 54 km/hr at the second point. The calculated speed at the first point is 30.33 km/hr. The discussion highlights uncertainty regarding how to determine the distance from the first point where the car was at rest. Participants are encouraged to consider kinematic equations and the information provided in the problem. The conversation focuses on solving for both the initial speed and the distance from rest.
wolfgangjt
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Homework Statement


A car moving at constant acceleration covers the distance between two points 58m apart in 6.2 seconds. its speed as it passes the second point is 54 km/hr. what is the speed at the first point? at what prior distance from the first point was the car at rest?

Homework Equations


Conversions.
58m/6.2s =9.36m/s 9.36 m/s converts to .5616km/hr. 54 km/hr * .5616km/hr = 30.33 km/hr

The Attempt at a Solution


The speed at the first point is 30.33 KM/Hr. Not sure how to arrive at the second part.
 
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wolfgangjt said:

Homework Statement


A car moving at constant acceleration covers the distance between two points 58m apart in 6.2 seconds. its speed as it passes the second point is 54 km/hr. what is the speed at the first point? at what prior distance from the first point was the car at rest?


Homework Equations


Conversions.
58m/6.2s =9.36m/s 9.36 m/s converts to .5616km/hr. 54 km/hr * .5616km/hr = 30.33 km/hr

The Attempt at a Solution


The speed at the first point is 30.33 KM/Hr. Not sure how to arrive at the second part.

What kinematic equations are you using?

And what have you been given in the question?
 

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