during a very quick stop, a car decelerates at 6.75 m/s2. (a) what is the angular acceleration (in rad/s2) of its 0.270 m radius tires, assuming they do not slip on the pavement? (indicate the direction with the sign of your answer. assume the tires initially rotated in the positive direction.) rad/s2 (b) how many revolutions do the tires make before coming to rest, given their initial angular velocity is 94.0 rad/s? revolutions (c) how long (in s) does the car take to stop completely? s (d) what distance (in m) does the car travel in this time? m (e) what was the car's initial velocity (in m/s)? (indicate the direction with the sign of your answer.) m/s (f) do the values obtained seem reasonable, considering that this stop happens very quickly?

Question

16-12-2022
Physics

Answered

during a very quick stop, a car decelerates at 6.75 m/s2. (a) what is the angular acceleration (in rad/s2) of its 0.270 m radius tires, assuming they do not slip on the pavement? (indicate the direction with the sign of your answer. assume the tires initially rotated in the positive direction.) rad/s2 (b) how many revolutions do the tires make before coming to rest, given their initial angular velocity is 94.0 rad/s? revolutions (c) how long (in s) does the car take to stop completely? s (d) what distance (in m) does the car travel in this time? m (e) what was the car's initial velocity (in m/s)? (indicate the direction with the sign of your answer.) m/s (f) do the values obtained seem reasonable, considering that this stop happens very quickly?

Answer :

Other Questions

At time t=0s , an object is moving to the right with a velocity v that can be modeled by the equation v=(4. 2 m/s)-(1. 4 m/s2)t. At what time, if any, does the

A car is driving down a road in the early morning when a deer walks into the road. if the deer was 25 meters away when the driver noticed it and the car was tra

A sports car accelerates at a constant rate from rest to a speed of 27. 8 m/s in 8. 00 s. What is the displacement of the sports car in this time interval?.

A box decelerates as it moves to the right along a horizontal surface as shown in the diagram. Which vector best represents the direction of the force of fricti

1. Two projectiles are thrown from the same point with the same velocity of 50 ms‐¹. The first is projected Making at an angle of θ with the horizontal and t

An object with an initial speed of 4. 0 meters per second accelerates uniformly at 2. 0 meters per second 2 in the direction of its motion for a distance of 5.

You are going on a field trip in a school bus. A special detector placed on one of the bus's tires counts the number of rotations completed by the tire during t

Kumar rides his bicycle such that the back wheel rotates 10 times in 5 s. Determine the angular velocity of the wheel in a) degrees per second b) radians per se

It A ban is throun at an angle of 37° above the horizontal suith an initial Velocity of 20 m/s. Find maximum height, total time and range of a ball.

Exercise III- Given the point M moving such that its coordinates at any instant t are: x = 2t; y = 5t² +4t where t is in second and x and y are in meters. 1-Fin

aamirmajeed5100 aamirmajeed5100 · Answer 1 · 2022-12-20T13:08:24-05:00

a) Angular acceleration (in rad/s2) = 6.75 m/s2 * (1 m / 0.270 m) = 25 rad/s2 (in the negative direction, since the car is decelerating)

b) Number of revolutions = (94.0 rad/s) / (25 rad/s2) = 3.76 revolutions

c) Time to stop completely = (94.0 rad/s) / (25 rad/s2) = 3.76 s

d) Distance travelled = (94.0 rad/s * 3.76 s) + (1/2 * 25 rad/s2 * 3.76 s2) = 402.5 m

e) Initial velocity = (25 rad/s2 * 3.76 s) + (94.0 rad/s) = 117 m/s (in the negative direction, since the car is decelerating)

f) The values obtained seem reasonable, considering that this stop happens very quickly. The initial velocity of 117 m/s is quite large, indicating that the car was traveling at a significant speed prior to the stop. The distance traveled, 402.5 m, is also reasonable.

For more questions like Angular acceleration click the link below:

https://brainly.com/question/11965182

#SPJ4