Answer:first law
Explanation:
it states the a body in motion or rest maintain its state until an external force is acted on it
energy. It will not disrupt the picture developing process by overexposing too much light on the film.
<span>the same amount of work being done over a longer period of time.</span>
True.
<span>Scientist use conversion factors to express the given value of a unit different type of unit</span>
From the equations of linear motion,
v² = u² + 2as where v is the final velocity, u is the initial velocity and a is the gravitational acceleration, and s is the displacement,
Thus, v² = u² -2gs, but v=0
hence, u² = 2gs
= 2×9.81×0.43
= 8.4366
u = √8.4366
=2.905 m/s
Hence the initial velocity is 2.905 m/s
Then using the equation v= u +gt .
Therefore, v = u -gt. (-g because the player is jumping against the gravity)
but, v = 0
Thus, u= gt
Hence, t = u/g
= 2.905/9.81
= 0.296 seconds
