Answer:
Explanation:
Given that,
Initial speed, u = 5.1 m/s
Final speed, v = 6.2 m/s
Time, t = 25 s
We need to find acceleration. We know that,
acceleration = rate of change of velocity
So, her acceleration is .
Answer:
: It Decreases.
As the spacecraft gets farther and farther from Earth, the gravitational
forces between the spacecraft and the Earth decrease.
Explanation:
Many factors affect<span> potential and </span>kinetic energy<span>. </span>Kinetic energy<span> is </span>energy<span> in motion, while potential </span>energy<span> is </span>energy<span> that hasn't happened yet. ... </span>Kinetic energy<span> is the </span>energy<span> an object produces when moving. Due to gravity, </span>kinetic energy<span> is </span>affected <span>by the object's mass and velocity.
Hope this helps. </span>
Answer:
Ratio is 100:1
Explanation:
From hydraulic press formulas;
(F1/A1) = (F2/A2)
Applying this to the question, we can say that Force on slave cylinder (Fs) = F1 while Force on master cylinder (Fm) = F2 and their respective Areas as As and Am.
Now plugging it into the equation to obtain;
Fs/As = Fm/Am
Now, the question says the hydraulic system is designed to exert a force 100 times as big as the one put into it, thus;
Fs = 100 Fm
And so from the equation earlier, rearranging, we have,
Fs/Fm = As/Am. So, 100Fm/Fm = As/Am
So, Fm will cancel out and we have ;
As/Am = 100/1
Thus, the ratio of the area of the slave cylinder to the master cylinder is 100:1
w = m x g
= mg
w = 20 x 9.8
20 x 9.8 = 196
The weight of an object with a mass of 20 kg is 196 newtons.
I used the approximate gravitational acceleration but it would be 200N if you used your 10m/s acceleration.