Question

1a. You launch a projectile at an initial speed of 43.8 m/s from the ground. After...

1a. You launch a projectile at an initial speed of 43.8 m/s from the ground. After 4.30 seconds of flight, the projectile lands on the ground. At what angle above the horizontal was the projectile launched?

b. A projectile is fired from the ground, reaches a maximum height of 28.4 m and lands a distance of 69.3 m away from the launch point. What was the projectile s launch velocity?

c. You launch a projectile toward a tall building, from a position on the ground 20.4 m away from the base of the building. The projectile s initial velocity is 53.8 m/s at an angle of 41.8 degrees above the horizontal. At what height above the ground does the projectile strike the building?

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