Answer:
Athlete A
Explanation:
Power is the rate of doing work and it is calculated as follows:
Power = work done/time taken = mgh/t
(for work being done against gravity)
So for athlete A
P = (100 kg * 9.8 N/kg* 0.6m)/0.5 s = 1176 W
For athlete B
P = (150 kg * 9.8 N/kg* 0.6m)/1 s = 882 W
For athlete C
P = (200 kg * 9.8 N/kg* 0.6m)/2 s = 588 W
For athlete D
P = (250 kg * 9.8 N/kg* 0.6m)/2.5 s = 588
Answer:
The answer is <em>D. In the direction of the wave</em>
Explanation:
I took the test, hope this helps! :)
Answer:
m = 4
Explanation:
We have,
You apply a force of 600 N to the branch which acts as a lever. It means it is input force, IF = 600 N
The rear of the truck weighs 2,400 N. It means it is output force, OF = 2400 N
The ratio of output force to the input force is equal to the mechanical advantage of the lever arm. It is given by :
So, the mechanical gain of the lever arm is 4.
Answer:
A.) the magnet or coil moves faster. Mark me brainliest <3
Explanation:
Answer: t = 10 s , s = 2,5 m
Explanation: (1) Speed v = v0 + at and (2) distance s = v0t + ½at².
Now v0 = 0.5 m/s , v = 0 and a = -0.05 m/s²
Solve from equation (1) t = -v0 / a = - 0.5 m/s / -0.05 m/s² = 10 s
Add t = 10 s to equation (2 ) s = 0.5 m/s · 10 s + 0.5· (-0.05 m/s²)· (10 s)²
= 5 m - 2,5 m = 2,5 m