Q1 a plane is flying horizontally with speed 198 ms at a

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Q1. A plane is flying horizontally with speed 198 m/s at a height 6640 m above the ground, when a package is dropped from the plane.

The acceleration of gravity is 9.8 m/s2.

Neglecting air resistance, while the package hits the ground, the plane will be

1. Directly above the package.

2. behind the package.

3. ahead of the package.

Q2. A roller coaster (335 kg) moves from A (5.00 m above the ground) to B (28.0 m above the ground). Two non conservative forces are present: friction does -2.00 104 J of work on the car, and a chain mechanism does +3.00 104 J of work to help the car up a long climb. What is the transform in the car's kinetic energy, ΔKE = KEf - KE0, from A to B.

Reference no: EM13354358

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