A car applies it’s brakes as it approaches a stop sign, slowing he car down is this unbalanced or balanced

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yanalaym [24]

Answer:

your right answer is true

hope it helps you

3 0

3 years ago

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Calculate the average travel time for each distance, and then use the results to calculate.

Eddi Din [679]

The average time that it takes for the car to travel the first 0.25m is 2.23 s

The average time that it takes for the car to travel the first 0.25 m is given by:

$t=\frac{2.24 s+2.21 s+2.23 s}{3}=2.227 s \sim 2.23 s$

The average time to travel just between 0.25 m and 0.50 m is 0.90 s

First of all, we need to calculate the time the car takes in each trial to travel between 0.25 m and 0.50 m:

$t_1 = 3.16 s - 2.24 s=0.92 s\\t_2 = 3.08 s- 2.21 s=0.87 s\\t_3 =3.15 s- 2.23 s=0.92 s$

Then, the average time can be calculated as

$t=\frac{0.92 s+0.87 s+0.92 s}{3}=0.90 s$

Given the time taken to travel the second 0.25 m section, the velocity would be 0.28 m/s

The velocity of the car while travelling the second 0.25 m section is equal to the distance covered (0.25 m) divided by the average time (0.90 s):

$v=\frac{d}{t}=\frac{0.25 m}{0.90 s}=0.28 m/s$

8 0

3 years ago

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Drawing a shows a displacement vector (450.0 m along the y axis). In this x, y coordinate system the scalar components are Ax 0

Alisiya [41]

Answer:

x ’= 368.61 m, y ’= 258.11 m

Explanation:

To solve this problem we must find the projections of the point on the new vectors of the rotated system θ = 35º

x’= R cos 35

y’= R sin 35

The modulus vector can be found using the Pythagorean theorem

R² = x² + y²

R = 450 m

we calculate

x ’= 450 cos 35

x ’= 368.61 m

y ’= 450 sin 35

y ’= 258.11 m

4 0

3 years ago

What is the relationship between wavelength and frequency? is it direct or inverse?

Komok [63]

T<span>he relationship between wavelength and frequency is inverse.

This is as the wavelength increases the frequency decreases and as the wavelength decreases the frequency increases.

The light meets this equation that reflects the relationship between wavelength and frequency:

c = wavelength * frequency => wavelength = c / frequency

where c is the constant speed of light.
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5 0

3 years ago

How much work did the movers do (horizontally) pushing a 170-kg crate 10.2 m across a rough floor without acceleration, if the e

zhannawk [14.2K]

Answer:

Work done, W = 10195.92 Joules

Explanation:

Given that,

Mass of the crate, m = 170 kg

Distance, d = 10.2 m

The coefficient of friction, $\mu=0.6$