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Averge velocity formula= Total distance travelled / total time taken.
Total distance=7meters
Total time taken=9 seconds.
Average velocity = 7/9= 0.77 metres/second
Average velocity= 0.77m/s
Thank you.
Answer:
Explanation:
Expression for times period of a satellite can be given as follows
Time period T = 1.8 x 60 x 60
= 6480
T² = where T is time period , r is radius of orbit , G is gravitational constant and M is mass of the satellite.
6480² = 4 x 3.14² x 7.5³ x 10¹⁸ / GM
GM = 4 x 3.14² x 7.5³ x 10¹⁸ / 6480²
= 3.96 X 10¹⁴
Expression for acceleration due to gravity
g = GM / R² where R is radius of satellite
20 = 3.96 X 10¹⁴ / R²
R² = 3.96 X 10¹⁴ / 20
= 1.98 x 10¹³ m
R= 4.45 x 10⁶ m
Answer:
law of action and riactiond
Speed can be shown on a graph of position versus time, and acceleration can be shown on a graph of speed versus time.
-- The toss was directed 37° above horizontal, at 19 m/s.
The horizontal component is 19 cos(37°) = 15.174 m/s .
The vertical component is 19 sin(37°) = 11.434 m/s .
The ball will continue to climb until its vertical speed is zero,
then will begin falling. It'll fall to the same level from which
it was thrown in the same time it spent rising.
Time spent rising = (11.434 m/s) / (acceleration of gravity) = 11.434/9.8 = 1.166 second.
Return to the same level from which it was thrown in (2 x 1.166) = 2.332 seconds.
<u>The ball is in the air for 2.332 seconds.</u>
In that amount of time, it travels horizontally (2.332) x (15.174) = 35.39 meters.