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Q1. A Nordic jumper goes off a ski jump at an angle of 10.0° below the horizontal, travelling 105 m horizontally and 55 m vertically before landing. (a) Ignoring friction and aerodynamic effects, compute the speed needed by the skier on leaving the ramp. (b) Olympic Nordic jumpers can make such jumps with a jump speed of 23 m/s that is considerably less than the answer found in part. Describe how that is possible.
Q2. A plane slows down from 142 m/s to 1 m/s in 3200 m.
A. What is the acceleration of plane?
B. How long does it take the plane to travel this distance?
C. Plot the position, velocity, and acceleration of the plane throughout this time interval as a function of time, using initial position of the plane as the origin.
Suppose that the light is incident at right angles to the film. what is the minimum distance from the slits to the screen when 580 nm light is used.
A 4.22 box sits at rest at the bottom of a ramp that is 7.74 long and that is inclined at 40.0 above the horizontal. The coefficient of kinetic friction is 0.40, and the coefficient of static friction is 0.50.
Consider a standing wave on the string with a frequency equal to the fifth harmonic (fn = nf1 with n = 5). How many nodes and antinodes does this standing wave possess.
A kayaker needs to paddle north across an 85 m wide harbor. The tide is going out, creating a tidal current that flows to the east at 1.7 m/s. The kayaker can paddle with the speed of 3.0 m/s.
Agree on the mass of the earth knowing that the mean radius of the moon's orbit about the earth is 248,910 mi and that the moon requires 28.32 days to complete one full revolution about earth.
Travelling at the speed of 14.10 m/s, driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.650. What is the speed of automobile after 1.130 s have elapsed..
Conclude the magnitude and directional angle
At what distance from a backstop will a package need to be placed depending on its weight and knowing it has to hit the backdrop at a velocity of 66 in/sec on a 11 degree angle. What is distance for every 5 lbs of package weight.
When a force of 19.0 N is applied to a spring, it elongates 0.0858 m. find out the period of oscillation of a 4.0 kg object suspended from this spring.
What frequency will hear after the train passes
If the orientation of the spacecraft is to be changed by 30.0°, for what time interval must the gyroscope be operated.
Compute Earth's gravitational force on the Shuttle astronauts while orbiting at an altitude of 220 miles (or 354 km) above Earth's surface.
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