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NemiM [27]
3 years ago
14

When setting your schedule, it is sometimes necessary to tell people "No." Please select the best answer from the choices provid

ed. t or f​
Physics
2 answers:
mart [117]3 years ago
6 0

Answer:

True Edg2020

Explanation:

Effectus [21]3 years ago
3 0

Answer:

True

Explanation:

You might be interested in
The brakes on your automobile are capable of creating a deceleration of 4.6 m/s^2. If you are going 114 km/h and suddenly see a
drek231 [11]

Answer:

The minimum time to get the car under max. speed limit of 79 km/h is 2.11 seconds.

Explanation:

a=\frac{V_f-V_0}{t}

isolating "t" from this equation:

t=\frac{V_f-V_0}{a}

Where:

a=-4.6m/s^2 (negative because is decelerating)

V_f= 79 km/h

V_0= 114 km/h

First we must convert velocity from km/h to m/s to be consistent with units.

79\frac{km}{h}*\frac{1000m}{1 km}*\frac{1h}{3600s}=\frac{79*1000}{3600}=21.94 m/s

114\frac{km}{h}*\frac{1000m}{1 km}*\frac{1h}{3600s}=\frac{114*1000}{3600}=31.67 m/s

So;

t=\frac{V_f-V_0}{a}=\frac{21.94 m/s-31.66m/s}{-4.6 m/s^2}=2.11 s

7 0
4 years ago
Answer the following questions. 3 A student runs 2 m/s. What does this mean? <br>​
natka813 [3]

Answer:

2ms-¹ means that the body under consideration moves 2m in a second, and may be it will continue to move 2m in every 1 second, if there's no external unbalanced force acting on that body (those forces do include frictional forces). mark its brainlist plz. Kaneppeleqw and 6 more users found this answer helpful. Thanks 3.

6 0
3 years ago
Read 2 more answers
Waves are observed passing under a dock. Wave crests are 8.0 meters apart. The time for a complete wave to pass by
lara31 [8.8K]

Answer:

Option D

2 m/s

Explanation:

The speed is given by distance/time

The complete wave has a distance of 8 m (This is the wavelength)

Time taken for complete wave is 4 s

Therefore, velocity= 8 m/ 4 s= 2 m/s

The amplitude is the distance between crest and trough hence 9 m- 6 m= 3 m

Frequency is 1/period and in this case period is 4 s hence frequency= 1/4= 0.25 Hz

Essentially, what we wanted is velocity

3 0
4 years ago
You're driving down the highway late one night at 20 m/s when a deer steps onto the road 35 m in front of you. You reaction time
bearhunter [10]

Answer:

Explanation:

Discount the time here; it's not important. It doesn't tell you how long it takes the car to stop, it only refers to reaction time, which means nothing in the scheme of things.

The useful info is as follows:

initial velocity = 20 m/s

final velocity = 0 m/s

a = -10 m/s/s

and we are looking for the displacement. Use the following equation:

v^2=v_0^2+2aΔx

where v is the final velocity, v₀ is the initial velocity, a is the deceleration (since it's negative), and Δx is displacement. Filling in:

0^2=(20)^2+2(-10)Δx and

0 = 400 - 20Δx and

-400 = -20Δx so

Δ = 20 meters

3 0
3 years ago
A student says that a speed of 50 m/s is faster than a speed of 140 km/h because the number is bigger. What would you say to the
denis23 [38]

Yes you are right but sometimes just because a number is  bigger doesnt always make it so.

5 0
3 years ago
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