I think it is 500 cm. Hope I helped!
Answer:
1.5288 J
Explanation:
We can use the Energy conversion law
Energy can not be made or destroyed. It can only be converted to another form of energy
Potential Energy (PE) is the energy an object has due to its height of the location
<em>PE = mass * gravitational acceleration * height from the ground</em>
Simply here , lemming had a PE and KE also.
(g = 9.8 m/s²)
PE = 0.0780 * 9.8 *2
= 1.5288 J
Answer:
100 Nm and 25Nm/s.
Explanation:
<u>Given the following data;</u>
Force = 25N
Distance = 4m
Time = 5secs
To find the workdone;
Workdone = force * distance
Substituting into the equation, we have;
Workdone = 25*4
Workdone = 100 Nm
To find the power consumed;
Power = workdone/time
Substituting into the equation, we have;
Power = 100/4
Power = 25Nm/s
The work done on the box is 100 Nm, and the power is 25 Nm/s.
Answer:
the answer has to be answer C
Answer:
0.80 c
Explanation:
The computation of speed is shown below:-
Here, The speed of the captain ship A report for speed of the ship B which is

where
indicates the speed of the ship A
indicates the speed of the ship B
and
C indicates the velocity of life
now we will Substitute 0.40c for A and 0.60 for B in the equation which is

after solving the above equation we will get
0.80 c
So, The correct answer is 0.80c