Question

2. For a projectile fired at 0° from a height of 19.6 m, how long does it take it to hit the ground? Remember that g = -9.8 m/s2. Initial velocity of the projectile is 40 m/s. Hint: Sine of 0° is 0 and Cosine of 0° is 1

Answer 1

Angle• = 0 degrees
U = 40ms^-1
g = 9.8ms^-2

From projectile motion
T = 2Usin•/g
T = (2 x 40 x sin0)/9.8
= 0