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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.
Compute the magnitude of the average acceleration
If coefficient of kinetic friction between the box and the floor is 0.570, how long does it take to move the box 4.00 m, starting from rest.
An asteroid is discovered heading straight toward Earth at 13km/s. An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 mins, after which the asteroid is moving at 28 degrees to its original path at a..
A 260 wooden raft floats on a lake. When an 80 man stands on the raft, it sinks 5.0 deeper into the water. When he steps off, the raft vibrates for a while. What is the frequency of vibration.
Write down an equation for the radial component
What is the effect of thermal insulation on cooling
How many homes could be heated with the waste heat
For the polarisers, assume the incident light is linearly polarized, the transmitted intensity (through both polarisers) is 0.15×I0, and the axis of the second polarizer makes an angle θ=41° with the axis of the first polarizer. What is the angle (in..
What is the least time necessary for crossing
W hat is balls initial speed
An electric field of 8.60 x 107 V/m is desired between two parallel plates, each of area 35.0 cm2 and separated by 2.45 mm of air. What charge must be on each plate.
Find out the edge dimension of each cube
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