Answer:
The power is 
Explanation:
From the question we are told that
The energy is
The time taken is 
Generally the the average power is mathematically represented as

=> 
=> 
Answer:
O B. when the angle between the force and displacement is 90°
Explanation:
<h3>work defined as

. </h3><h3>work can only be done if object moves(displacement) in the direction of force. now a quick one. if you since the varrious angles into the cosine, you would see that Cos 90 will give zero which implies that no work is done. Again, angle means it is perpendicular and so it is not in the direction of force.</h3>
Answer:
20.96 m/s
Explanation:
Apply the kinematic equation:
Vf=Vi+at
Vi=8m/s
a=1.8m/s^2
t=7.2s
Putting this all in should give you your answer of 12.96m/s
Answer:
D-it's never acceptable to ignore rules and etiquette
Explanation:
Answer:
I thinl it is I'm not sure though