Answer:
u = 13.67 m/s
Explanation:
given,
window height = 2 m
window is 7.5 m off the ground on its path up
total distance from the ground to pass the window = 2 + 7.5 = 9.5 m
time taken to go past the window = 1.30 s
using equation of motion



u = 13.67 m/s
hence, the initial velocity of the ball is equal to 13.67 m/s
I believe the correct answer from the choices listed above is option B. The scientist most often credited with the idea that matter can have wave-like properties is de Broglie. He <span>related E=mc^2, E=hf and p=mv in order to acquire the de Broglie wavelength, whose formula λ=h/p where h is Planck's constant and p is momentum of the particle.</span>
To slow down or reduce speed.
Answer:
c) 1.3 X 10⁵ N
Explanation:
<u>Step 1:</u> From equation of motion; V² = U² +2as
where, U and V are initial and final velocity respectively,
a is the acceleration and s is the distance traveled
(5400)² = 0² +2*a*193
a = (5400)²/ (386)
a = 75544.04 m/s²
<u>Step 2:</u> calculate the maximum force applied to the meteor

= 211,523.312 N
<u>Step 3:</u> calculate the average force applied to the meteor

= 105,761.7 N
1.1 X 10⁵ N
The nearest option is C