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Alex Ar [27]
4 years ago
13

Acceleration is the magnitude of average velocity.​

Physics
1 answer:
lina2011 [118]4 years ago
4 0

Answer:

false

Explanation:

just did the question on apex, true was wrong

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1. A ball initially rolling at 10m/s comes to a stop in 25 seconds. Assuming the ball has
LiRa [457]

Answer:

B) 125 m

Explanation:

s =  \frac{u + v}{2} t \\ s \:  =  \frac{10 + 0}{2} (25) \\ s \:  = 125m

5 0
4 years ago
A golf club rotates 215 degrees and has a length (radius) equal to 29 inches. The time it took to swing the club was 0.8 seconds
vichka [17]

Answer:

The average linear velocity (inches/second) of the golf club is 136.01 inches/second

Explanation:

Given;

length of the club, L = 29 inches

rotation angle, θ = 215⁰

time of motion, t = 0.8 s

The angular speed of the club is calculated as follows;

\omega = (\frac{\theta}{360} \times 2\pi, \ rad) \times \frac{1}{t} \\\\\omega =  (\frac{215}{360} \times 2\pi, \ rad) \times \frac{1}{0.8 \ s} \\\\\omega = 4.69 \ rad/s

The average linear velocity (inches/second) of the golf club is calculated as;

v = ωr

v = 4.69 rad/s  x  29 inches

v = 136.01 inches/second

Therefore, the average linear velocity (inches/second) of the golf club is 136.01 inches/second

8 0
3 years ago
The proper time between two events is measured by clocks at rest in a reference frame in which the two events: The proper time b
alekssr [168]

Answer:

a - As long as the time between 2 events is reconcilable with a light signal, the time between the events, in that frame, can be determined.

8 0
3 years ago
Read 2 more answers
What type of stress is caused by two tectonic plates sliding past one another
prisoha [69]
Extensional stress. is your answer.
5 0
3 years ago
Read 2 more answers
what is the resistance of a car light bulb that conducts 0.025A current when connected to a 12V car accumulator? is the current
Sophie [7]

One form of Ohm's Law says . . . . . Resistance = Voltage / Current .

R = V / I

R = (12 v) / (0.025 A)

R = (12 / 0.025) (V/I)

<em>R = 480 Ohms</em>

I don't know if the current in the bulb is steady, because I don't know what a car's "accumulator" is.  (Floogle isn't sure either.)

If you're referring to the car's battery, then the current is quite steady, because the battery is a purely DC storage container.

If you're referring to the car's "alternator" ... the thing that generates electrical energy in a car to keep the battery charged ... then the current is pulsating DC, because that's the form of the alternator's output.  

7 0
3 years ago
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