Answer:
v = [√(g/2h)]L
Explanation:
Let v be the initial horizontal velocity, t be the time James Bond uses to jump over the ledge of length, L.
So, vt = L and t = L/v
Also, since James Bond has no initial horizontal velocity, he falls freely through the distance, h so we use the equation y - y' = ut - 1/2gt², where y = 0 (at the top of the cliff) and y' = -h, u = 0 (initial vertical velocity), g = acceleration due to gravity = 9.8 m/s² and t = the time it takes to jump off the cliff = L/v.
Substituting these values into the equation, we have
y' - y = ut - 1/2gt²
-h - 0 = 0 × t - 1/2g(L/v)²
-h = - 1/2gL²/v²
v² = gL²/2h
taking square root of both sides, we have
v = [√(g/2h)]L
So, James Bond's minimum horizontal speed is v = [√(g/2h)]L
The mass of a star causes gravitational pull inwards. The fusion of hydrogen to helium create temperature and pressure which pushes outwards, so basically the forces of gravity and pressure. Possibly nuclear fusion.
The correct answer is velocity
Velocity includes speed, time, and direction, making it a vector unit. Velocity shows at what speed something is moving for how long in what direction, which is what happens here.
A) We'll see the bell move, but we won't hear it ring
Because, light can travel through vacuum and sound cannot travel through vacuum. Sound waves are vibrations of particles in any media. So Sound requires a medium to travel and cannot travel in vacuum as there are no atoms or molecules to vibrate