Answer:
Word for the first blank: gravity
Word for the second blank: matter
Explanation:
The only way debris from the impact with Earth can be held close to Earth is due to a force. The only force that could be acting from Earth is "the force of gravity".
The gravitational pull of this new object being formed, increases proportional to its mass as more and more "matter" accumulates. And the accretion process is now on its way.
Explanation:
Write equations for the position of each car as a function of time. (Make sure to convert units if they're different.)
The red car's position x at time t is:
x = (14.41 cm/s) t + 60 cm
The blue car's position x at time t is:
x = (41.32 cm/s) t
To find when they meet, set the equations equal to each other.
(14.41 cm/s) t + 60 cm = (41.32 cm/s) t
60 cm = (26.91 cm/s) t
t = 2.230 s
Answer:
Vf = 62.61 m/s
Explanation:
Since, the truck completely stops t highest point. Therefore, from conservation of energy principle:
Kinetic Energy Lost by Truck = Potential Energy Gained by Truck
(0.5)(m)(Vf² - Vi²) = mgh
(0.5)(Vf² - Vi²) = gh
where,
Vf = final velocity = 0 m/s (since, truck finally stops)
Vi = initial velocity = ?
g = acceleration due to gravity = - 9.8 m/s² (negative sign due to upward motion)
h = Height of Ramp = (Length)(Sin θ) = (400 m)(Sin 30°) = 200 m
Therefore,
(0.5)(0² m/s - Vf²) = (-9.8 m/s²)(200 m)
Vf² = (1960 m²/s²)/(0.5)
Vf = √(3920 m²/s²)
<u>Vf = 62.61 m/s</u>
Answer:
graph 1
Explanation:
When it comes to a graph showing "constant acceleration," the line should be straight and upward <em>(positive acceleration) or </em>straight and downward <em>(negative acceleration).</em> The variables for acceleration are time and velocity. The independent variable (time) should be placed on the<em> x-axis</em> while the dependent variable (velocity) should be placed on the<em> y-axis.</em> As time increases, the velocity increases the same way. It doesn't slow down or changes. This makes it constant. <u>They are also directly proportional to each other</u>. This is evident on the first graph.
Answer:
Ratio is 7.58
Explanation:
At the bottom of the circle, the net force is given by
where m is mass of plane, v is the speed of plane, r is vertical circle radius
Since W=mg, dividing left side by W and right side by mg we obtain
=7.578096
=7.58
Considering that =7.58 which is greater than 2, the pilot is advised to wear the anti-G suit