Answer:
1.03 seconds
Explanation:
x = x₀ + v₀ t + ½ at²
0 = 7.63 + (-2.40) t + ½ (-9.8) t²
0 = 7.63 - 2.40 t - 4.9 t²
Solve with quadratic formula:
t = [ -b ± √(b² - 4ac) ] / 2a
t = [ 2.40 ± √(2.40² - 4(-4.9)(7.63)) ] / -9.8
t = -1.52, 1.03
Since t can't be negative here, the sandbag hits the ground after 1.03 seconds.
Answer:
the angular momentum of the paticle is 8.4i - 10.2j.
Explanation:
the angular momentum is given by:
L = m×v×r
= (1.40)×(4.00i - 3.30j)×(1.50i + 2.20j)
= (1.40)×[(4.00×1.50)i - (3.30×2.20)j]
= (1.40)×(6i - 7.26j)
= 8.4i - 10.2j
Therefore, the angular momentum of the paticle is 8.4i - 10.2j.
A hypothesis must be TESTABLE in order to be termed a scientific hypothesis.
-Hope this helps
Answer:
B is the answer because it's the closest to the sun, so it has a smaller path.