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Motion in Plane: Rocket lanching and then projectile motion

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A rocket accelerates upward from the ground at 25m.s-2 for 2.5s at an angle of 80o to the horizontal. The rocket motor stops and it eventually falls to the ground.

Neglecting air resistance and assuming that the trajectory during acceleration is a straight line.

a. Make a labeled sketch of the rockets trajectory starting from the launch point. Include the numerical values of the horizontal and vertical velocity at the point where the rocket motor stops.

b. How long after launch does the rocket hit the ground?

c. How far does the rocket travel horizontally from the launch point?

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Solution Preview

A rocket accelerates upward from the ground at 25m.s-2 for 2.5s at an angle of 80o to the horizontal. The rocket motor stops and it eventually falls to the ground.

Neglecting air resistance and assuming that the trajectory during acceleration is a straight line.

a. Make a labelled sketch of the rockets trajectory starting from the launch point. Include the numerical values of the horizontal and vertical velocity at the point where the rocket motor stops.

b. How long after launch does the rocket hit the ground?

c. How far does the rocket travel horizontally from the launch point?

Answer:
The rocket is moving in a vertical plane ...

Solution Summary

3 parts of motion with rocket and then projectile motion are discussed in the solution.

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