The discussion revolves around a physics problem involving a car coasting to a stop on a level road, specifically focusing on the forces acting on the car and the calculations related to distance and acceleration.
Participants are actively engaging with the problem, offering guidance on how to approach the calculations. There is a recognition of confusion regarding the definitions of force and acceleration, and some participants have made progress in their understanding.
There is a mention of specific values such as mass, initial velocity, and friction force, which are critical to the calculations being discussed. Participants are also navigating through the constraints of the problem as posed in the homework context.
rmalski said:Homework Statement
A 1490 kg car is is traveling at a speed of 22.2 m/s when the driver let's the car coast on a level road. The friction on the car slowing it down is 288 N. How far will the car coast?
Homework Equations
f=maThe Attempt at a Solution
i can find the force but i cannot find the distance, i found that the force is 32790N but i am stuck after that
well first i found the force by multiplying m and a, then i subtracted the friction force which is 288n. i got the force as 32790 and this is where i got stuck. i thought the acceleration is 22.2m/s^2?berkeman said:Welcome to the PF.
Please show in detail your calculations so far. How did you get that number? You are given a force F and a mass m, use the equation you wrote to calculate the acceleration (deceleration in this case). How can you use the deceleration to figure out the time until the car stops?
rmalski said:well first i found the force by multiplying m and a, then i subtracted the friction force which is 288n. i got the force as 32790 and this is where i got stuck. i thought the acceleration is 22.2m/s^2?