A projectile is fired at an angle of 30° to the horizontal with a velocity...
PHYSICS
WAEC 2021
A projectile is fired at an angle of 30° to the horizontal with a velocity of 40 m/s Calculate the velocity attained after 1 s. [g = 10 m/s\(^2\)]
Explanation
Calculation of velocity: V = √[V\(^2\)x + V\(^2\)\(_y\)]
V\(_x\) = 40 Cos30 = 34.6 m/s
V\(_y\) = 40 sin30 - 10(1) = 10 m/s
V = √[34.6\(^2\) + 10\(^2\)]
V = 36.02m/s
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