Write the equation you are using to solve this problem, then substitute in it for the variables you know.pennywise1234 said:Homework Statement
A bobsled glides down a hill with an acceleration of -4.5 m/s If it stops after 5 s, what was its initial velocity?
2. Homework Equations
i know vf(final)= v + at
The Attempt at a Solution
i multiplied -4.5m/s by 5s and i got the correct answer the only problem is the answer is negative, i need it to be positive. Where or what did i do wrong?
The formula for solving for initial velocity is V0 = V - at, where V0 is the initial velocity, V is the final velocity, a is the acceleration, and t is the time.
Yes, this formula can be used for any type of initial velocity problem as long as you have values for the final velocity, acceleration, and time.
If you only have the final velocity and acceleration, you can use the formula V0 = √(V2 - 2ad), where V0 is the initial velocity, V is the final velocity, a is the acceleration, and d is the distance.
The unit of measurement for initial velocity depends on the units used for the other variables in the formula. For example, if acceleration is measured in meters per second squared and time is measured in seconds, then the initial velocity will be measured in meters per second.
Yes, this formula can be used to solve for initial velocity in a projectile motion problem as long as you have the necessary variables (final velocity, acceleration, and time) and understand the direction and angle of the projectile's motion.