Analysing Projectile Motion – Practice

Questions:

1) A 150kg package is dropped from an army plane and accelerates toward the Earth.

a) What is the acceleration of the package if we assume a constant drag force of 195N?

b) What is the packages vertical speed 7 seconds after jumping out of the plane?

2)  A projectile is launched with an initial velocity of 100 m/s at an angle of 15° to the horizontal as shown below. Calculate the horizontal and vertical components of the projectiles velocity:

3) A projectile is launched with an initial velocity of 40 m/s at an angle of 70° to the horizontal. Calculate the horizontal and vertical components of the projectiles velocity:

Quick Answers:

1a) 8.5 m/s    b) 59.5 m/s

2) Horizontal = 96.6 m/s    Vertical = 25.9 m/s

3) Horizontal = 13.7 m/s    Vertical = 37.6 m/s

Worked Answers:

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