Answer:
Initial velocity = 39.2m/s
Maximum height is 78.4m
Explanation:
Given
Solving (a): Initial Velocity
Using first law of motion:
Where
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<em> [g represents acceleration due to gravity]</em>
Substitute these value in the above formula:
Take g as 9.8m/s²
<em>Hence, initial velocity = 39.2m/s</em>
Solving (b): Maximum Height
This will be solved using second equation of motion
This becomes
Substitute values for u, t and g
<em>Hence, the maximum height is 78.4m</em>
Answer:
Explanation:
As we know that the centripetal force is given as
now we will have to find the rate of change in force with respect to its radial distance
so we have
so we have
m = 1000 kg
v = 13.89 m/s
r = 200 m
now we have
Answer:
Evaluate the following numerical expressions.
6 + 3 • 4 =
18
(6 + 3) ÷ (4 – 5) =
Explanation:
Evaluate the following numerical expressions.
6 + 3 • 4 =
18
(6 + 3) ÷ (4 – 5) =
Very specific alignment of the Sun, Earth, and Moon. If the Moon is lined up precisely with the Sun from the Earth's point of view, the Moon will block Sunlight from reaching the Earth, causing a solar eclipse.
Answer:
As the areas swept by the comet shown are all equal, the travel time of the comet in each of the presented segments is also the same
Explanation:
Kepler's second law states that an object in orbit round the Sun sweeps an equal area in an equal time interval
Here we have the area swept by the comet in a particular duration of time is constant. That is a comet sweeps equal areas in its orbit around the sun in equal time. Therefore. as the areas swept by the comet shown are all equal, the travel time of the comet in each of the presented segments is also the same.
