What is the formula for finding initial velocity from acceleration and distance?

In summary, the problem is asking for the initial velocity of a car that is accelerating at a rate of 1.65 m/s2 and passes two marks 30 m apart at times 2.4 s and 4.8 s. The relevant equations to use are v = vo + at and s = 1/2 at^2. The second equation provided by the student is incorrect as it does not include the initial velocity.
  • #1
mcryder16
10
0

Homework Statement



A car accelerates at 1.65 m/s2 along a straight road. It passes two marks that are 30 m apart at times 2.4 s and 4.8 s. What was the car's initial velocity?


Homework Equations




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The Attempt at a Solution

 
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  • #2
Well you should list some relevant equations. Here is what you know: a, x, and change in time. And you want to know v_0.

So in your list of kinematic equations, do you have an equation that has all 4 of those variables?
 
  • #3
v = vo + at
s = 1/2 at2
v2 = v02+2as

choose one
 
  • #4
Your 2nd equation you listed is inaccurate TaiwanCountry. You forgot to mention the initial velocity in that equation.
 

1. What is initial velocity and why is it important in science?

Initial velocity, also known as initial speed, is the rate at which an object starts moving in a specific direction. It is important in science because it helps us understand the motion of objects and calculate their future positions and speeds.

2. How is initial velocity measured?

Initial velocity can be measured by dividing the change in an object's position by the change in time. This can be done using a variety of tools such as a speedometer, radar gun, or motion sensors.

3. What factors affect the initial velocity of an object?

The initial velocity of an object can be affected by various factors such as the force applied to it, the mass of the object, and the presence of external forces such as friction or air resistance.

4. How does initial velocity differ from final velocity?

Initial velocity is the speed at which an object begins its motion, while final velocity is the speed at which it ends its motion. Initial velocity is also referred to as the starting velocity, while final velocity is known as the ending velocity.

5. What are some real-world applications of finding initial velocity?

Finding initial velocity has many practical applications, such as determining the launch speed of a rocket, calculating the speed of a moving vehicle, and understanding the trajectory of a projectile. It is also crucial in fields such as sports, engineering, and physics.

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