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A runner makes one lap around a track in 68.0s. The track is oval, has two straight 100m stretches with a semicircular bend (radius of 50m) at each end.
A) What was the runner's total distance for the lap?
B) What was the runner's total displacement for the lap?
C) What was the runner's average speed for the lap?
D) What was the runner's average velocity for the lap?
find the potential energy at each location below. How far from the point of the drop will the rock hit the ground.
A circular platform is supported by 8 identical steel wires. The platform and its uniformly distributed load has a total mass of 3.7 kg. The breaking stress of steel is 7.50 x 108 pascals.
A physicist trying to demonstrate destructive interference stands 2.7m directly in front of a speaker. A second speaker produces identical (coherent) 600Hz tones.
You can ignore friction between the sled and surface of the pond. Use the work-energy theorem to find the speed of the sled at 3.00 m.
At the end of a race a runner decelerates from a velocity of 10.00 m/s at a rate of 0.400 m/s2. What is her final velocity
what is the minimum work by the force p to move the 8-kg block to the top of the incline of uk0.4? compare this with
A flashlight on the bottom of a 3.70 m deep swimming pool sends a ray upward at an angle, What angle (in air) does the emerging ray make with the water's surface
A tank of a car holds 16 gallons , a liter is .264 gallons, 1 inch equal 2.54 cm, and 1mile equal 1609 m, how many km can it travel on one tank if it gets 25mpg
Multiple-Concept Example 1 discusses the concepts that are relevant to this problem. obtain the rise in its temperature
The prong of a tuning fork moves back and forth when it is set into vibration. what are the maximum velocity and the maximum acceleration of the prong
The electron beam inside a television picture tube is 0.300mm in diameter and carries a current of 55.0 uA. What is the current density in the electron beam
A sled weighs 100 N. It is held in place on a frictionless 20 degree slope by a rope attached to a stake at the top of the slope; What is the normal force acting on the sled
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