A. 0°
B. 30°
C. 45°
D. 60°
E. 90°
Correct Answer:
Option B – 30°
Explanation
T = 2u sinθ/g
sinθ = Tg/2u
= 10 x 10/2 x 100
= 0.5
, θ = sin-10.5 = 30°
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![A ball bearing is projected vertically upwards from the ground with a velocity of 15ms‾¹. Calculate the time taken by the ball to return to the ground [g = 10ms‾²]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "A ball bearing is projected vertically upwards from the ground with a velocity of 15ms‾¹. Calculate the time taken by the ball to return to the ground [g = 10ms‾²]")