The net force on the cart is 100 N in the direction of its motion, so by Newton's second law we can find the acceleration <em>a</em> applied to it:
100 N = (50 kg) <em>a</em>
<em>a</em> = (100 N) / (50 kg)
<em>a</em> = 2 m/s²
The cart starts at rest and travels a distance of 10 m, so that its final velocity <em>v</em> satisfies
<em>v</em> ² - 0² = 2 (2 m/s²) (10 m)
<em>v</em> ²= 40 m²/s²
and so the cart ends up with kinetic energy
KE = 1/2 <em>m</em> <em>v</em> ² = 1/2 (50 kg) (40 m²/s²) = 1000 J
Answer:
True
no water ever leaves the planet
Let us consider the air with the index 1 and the lucite with index 2. Using the Snell's Secound Law, we have:
Entering the unknowns, remembering that the air refrective index is 1 and the lucite refrective index is 1.5, comes:
Using the arcsin properties, we get:

Obs: Approximate results, and the drawing is attached
If you notice any mistake in my english, let me know, because i am not native.
https://vt.tiktok.com/ZSejgvyRC/Waaazuupp!!