Final answer:
To calculate the velocity of a car after 0.50 s when its brakes are locked and the force of friction is 2.5x10⁴ N, we can use the equation: Change in velocity = Acceleration x time. Using the given information, we substitute the values into the equations and calculate the final velocity.
Step-by-step explanation:
To calculate the velocity of a car after a certain amount of time when its brakes are locked and the force of friction is given, we can use the equation:
Frictional force = mass x acceleration
In this case, the frictional force is given as 2.5x10^4 N. We can assume the mass of the car is constant. To find the acceleration, we can rearrange the equation:
Acceleration = Frictional force / mass
Now, we can use the acceleration and time values to find the change in velocity:
Change in velocity = Acceleration x time
The final velocity is then the initial velocity plus the change in velocity:
Final velocity = Initial velocity + Change in velocity
Using the given information, we substitute the values into the equations and calculate the final velocity.