1) a car accelerates uniformly from rest and reaches a speed of 19.8 m/s in 7 s. the diameter of a tire is 38.5 cm. find the number of revolutions the tire makes during this motion, assuming no slipping. answer in units of rev.

2) a wheel has a radius of 4.8 m. how far (path length) does a point on thecircumference travel if the wheel is rotatedthrough an angle of 54◦? answer in units of m.

3) how far (path length) does a point on thecircumference travel if the wheel is rotatedthrough an angle of 319 rad? answer in units of m

1) 57 revolutions.

2) 4.52 m

3) 1531.2 m

Explanation:

Question 1:

Given:

Initial velocity,

Final velocity,

Time,

Acceleration,

Now, displacement of the tire is given as:

Displacement of tire in 1 revolution is equal to its circumference.

Therefore, displacement in 1 revolution =

Now, number of revolutions is given as:

Therefore, the number of revolutions are 57.

Question 2:

Given:

Radius of the wheel is,

Angle of rotation is, °

Converting degree to radians, we get:

Now, path length is given as:

Therefore, the path length of a point on the wheel is 4.52 m

Question 3:

Radius of the wheel is,

Angle of rotation is, radians

Now, path length is given as:

Therefore, the path length of a point on the wheel is 1531.2 m.

any one of the statements could be an accurate comparison. but the statement that would define the correct choice and seal the deal is not even on the list:

"the visibilities of vector-x and vector-y in the drawing provided with the question are identical and nonexistent."

since you're a real machine, your ama is always less than your ima, because you can never totally eliminate friction.