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A jogger runs along a straight and level road for a distance of 5.0 km and then runs back to her starting point. It took the jogger 2.0 hrs to complete the round trip. For the round trip, which one of the following statements is true?
[a] Her average speed is 5.0km/hr and her average velocity is 5.0km/hr.
[b] Her average speed is 5.0km/hr and her average velocity is 0.0km/hr.
[c] Her average speed is 0.0km/hr and her average velocity is 0.0km/hr.
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 13 m/s at an angle 54 degrees
A small circular loop of area 2.00cm^2 is placed in the plane of, and concentric with, a large circular loop of radius 1.00m. What emf is induced in the smaller loop at t=0.500s
The impact of the head of a golf club on a golf ball can be approximately regarded as an elastic collison. what must the speed of the club be before impact
A ball of mass 0.25 kg is attached to a string 0.750 m long. The ball is swung in a pendulum-type motion such that it has a speed of 6.40 m/s, What is the corresponding tension in the string
Consider a parallel plate capacitor with plates of size 2 cm times 2 cm, with a distance of 2 mm between the plates. find the speed with which the proton hits the negative plate
The 6.275 kg sledge hammer shown on the right has a small hole drilled at point "P" and a metal rod is inserted to act as a low-friction pivot. When the hammer is displaced slightly and allowed to swing from the pivot, its period of oscillation is ..
A projectile is fired with an initial muzzle speed 440 m/s at an angle 45 from a position 6 meters above the ground level. At what speed does the projectile hit the ground
The coefficient of static friction between the ladder and the ground is 0.55, and the ladder makes a 50.0° angle with the ground. Explain how far up the ladder can an 720 N person climb before the ladder begins to slip?
q1. a mountain climber in the process of crossing between two cliffs by a rope pauses to rest. she weighs 550 n. as
Assume that a cement truck with a mass of 10,000 kg hits you while you were stopped at a traffic light, and that you are driving a Yugo with a mass of 750 kg. If the truck was traveling at 15 mph and the crash makes you stick together (you and the..
Two parallel rods are each 0.50 m in length. They are attached at their centers to either end of the spring (spring constant = 150 N/m) that is initially neither stretched nor compressed.
One mole of helium atoms has a mass of 4 grams. If a helium atom in a balloon has a kinetic energy of 1.224e-21 J, what is the speed of the helium atom
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