<span>Aristotle would say that an object comes to rest because it got tired. Aristotle came up with ideas, but never tested them.
Galileo used experiments and mathematical models to analyze motion. He used a slanted inclined plane an order to slow down the acceleration due to gravity on an object. He found out that an object accelerates as it falls. </span>
Answer:
19.2m/s
Explanation:
Assuming that 2.4m/s^2 was the acceleration and not a typo, we can use the equation v=at, where v=velocity, a=acceleration, and t=time,
plug in known varibles,
v=2.4*8
v=19.2m/s
Answer:
a) S = 24.4 m/s
b) angle from the +y direction = 28.7°
Explanation:
1) Data
Vy = 21.4 m/s = constant
Vy,o = 0
Ax = 0.301 m/s²
t = 38.9 s
a) V = ?
b) angle=?
2) Formulas
i) Vy = constant = Vy,o
ii) Vx = Vx,o + Ax t = 0 + Ax t = Ax t
3) Solutions
a) speed
t = 38.9 s and Vx,o = 0.301 m/s² ⇒ Vx = 0.301 m/s² × 38.9s = 11.7 m/s
V² = Vx² + Vy² = (11.7 m/s)² + (21.4m/s)² = 594.85 m² / s²
⇒ V = 24.39 m/s
b) angle measured from the +y direction
tan (angle) = Vx/Vy = 11.7 m/s / 21.4 m/s = 0.5467
angle = arctan(0.5467) ≈ 28.7°
Answer:
Ang answer units of J heat of fusion is 3.33 x 105