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13.02.2020 •
Physics
A ball is thrown upward at a 45∘∘ angle. In the absence of air resistance, the ball follows a. A. A ball is thrown upward at a 45 angle.B. In the absence of air resistance, the ball follows a tangential curve.C. parabolic curve.D. sine curve.E. linear curve.
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Ответ:
C. parabolic Curve
Explanation:
The trajectory of a projectile motion is parabolic.
If a ball is thrown at angle of 45° to the horizontal then it will follow a parabolic curve during its motion as its a projectile motion. The other options are incorrect as sine curve is a periodic type of curve. linear curve and tangential curve are also out of place.So option C is correct
Ответ:
horizontal direction ; Time of flight = 0.65seconds.
Explanation:
Initial direction: horizontal direction.
Time of the flight= velocity is (distance/time)
Speed= 7.1m/s
Distance= 4.6m
Time= X
Time = (Distance/speed)
X = (4.6 / 7.1) = 0.65 seconds
Time of flight = 0.65seconds.