When lamps with wattages greater than the rating of the luminaire are installed, a fire could occur because the luminaire is bei
1 answer:
You might be interested in
Answer:
110 m
Explanation:
First of all, let's find the initial horizontal and vertical velocity of the projectile:
Now in order to find the time it takes for the projectile to reach the ground, we use the equation for the vertical position:
where
h = 65 m is the initial height
t is the time
g = 9.8 m/s^2 is the acceleration due to gravity
The time t at which the projectile reaches the ground is the time t at which y(t)=0, so we have:
which has 2 solutions:
t = -2.58 s
t = 5.13 s
We discard the 1st solution since its negative: so the projectile reaches the ground after t=5.13 s.
Now we know that the projectile travels horizontally with constant speed
So, the horizontal distance covered (x) is
So the closest option is
110 m
