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Doss [256]
3 years ago
15

What is endurance? a). the ability to run faster b). a combination of balance and coordination c). how much you can stretch d).

the ability to exercise for longer periods of time
Physics
1 answer:
Alex787 [66]3 years ago
8 0

Answer:

D. the ability to exercise for longer periods of time

Explanation:

For example, when someone does endurance training, they are stretching their body's ability to do a certain exercise for longer times as opposed to increasing strength.

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Calculate the force exerted on this test dummy with a mass of 75 kg hits an air bag accelerating at 12 m/s2.
maksim [4K]

Answer: 900

Explanation: Force equals mass x acceleration F=M×A

3 0
3 years ago
What resistance would produce a current of 120A from a 6-volt battery?
andriy [413]
120/6=20 ohms :) would be the ans
6 0
3 years ago
The instantaneous speed of a particle moving along one straight line is v(t) = ate−6t, where the speed v is measured in meters p
beks73 [17]

Answer:

v_max = (1/6)e^-1 a

Explanation:

You have the following equation for the instantaneous speed of a particle:

v(t)=ate^{-6t}   (1)

To find the expression for the maximum speed in terms of the acceleration "a", you first derivative v(t) respect to time t:

\frac{dv(t)}{dt}=\frac{d}{dt}[ate^{-6t}]=a[(1)e^{-6t}+t(e^{-6t}(-6))]  (2)

where you have use the derivative of a product.

Next, you equal the expression (2) to zero in order to calculate t:

a[(1)e^{-6t}-6te^{-6t}]=0\\\\1-6t=0\\\\t=\frac{1}{6}

For t = 1/6 you obtain the maximum speed.

Then, you replace that value of t in the expression (1):

v_{max}=a(\frac{1}{6})e^{-6(\frac{1}{6})}=\frac{e^{-1}}{6}a

hence, the maximum speed is v_max = ((1/6)e^-1)a

5 0
3 years ago
A wave has a wavelength of 30 mm and a frequency of 5.0 hertz. What is its speed?
Alenkinab [10]
                 Wave speed  =  (frequency) x (wavelength)

                                       =  (5 / second)  x  (30 mm) 

                                       =      150 mm/second  =  0.15 meter/second .
8 0
3 years ago
A rock falls off a 15 meter cliff. How fast is the rock traveling vertically two seconds later?
oksian1 [2.3K]
The acceleration of gravity on Earth is 9.8 m/s².  That means that
an object falling under the influence of gravity will move 9.8 m/s
faster than it was moving a second earlier.

Falling from rest, it will be moving 9.8 m/s after the first second,
and 19.6 m/s after the 2nd second.

The height from which it fell doesn't matter.
8 0
3 years ago
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