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A cannonball is shot (from ground level) with an initial horizontal velocity of 37.0 m/s and an initial vertical velocity of 22.0 m/s.
What is the speed of the cannonball 3.5 seconds after it was shot?
What is coefficient of friction between chair and floor
a student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 20m/s the stone travels 100 m horizntally and hits the beach. what is the height of the cliff
The driver of a 1350 kg car, initially traveling at 12.1 m/s, applies the brakes, bringing the car to rest in a distance of 19.5 m. Find the net work done on the car
A 67.0 kg diver is 2.30 m above the water, falling at speed of 6.70 m/s. Calculate her kinetic energy as she hits the water
Two stars in a binary system orbit around their center of mass. The centers of the two stars are 7.30 x 10^11 m apart. What is the mass of the smaller star
A cord of length 1.5 m is fixed at both ends. Its mass per unit length is 1.1 g/m and the tension is 11 N. What is the frequency of the fundamental oscillation
A helicopter 8.20m above the ground and descending at 4.40m/s drops a package from rest (relative to the helicopter). find the velocity of the package relative to the helicopter
A skier starts from rest at the top of a 48 m hill, skis down a 32° incline into a valley, and continues up a 28 m high hill. How fast is the skier moving at the bottom of the valley
How many rulings must a 4.22-cm-wide diffraction grating have to resolve the wavelengths 415.544, At what angle are the second order maxima found
A canal boat (mass=25,000 kilograms) is being towed at a uniform velocity v=3.10 m/s, Determine the magnitude and direction of the towing force
The distance from the Sun to Jupiter is 5.2 times longer than the Earth-Sun distance. Take the intensity of sunlight at the Earth to be 1383 W/m2. Find the intensity of sunlight at Jupiter
Consider a 619-N weight is being held by two cables. The left hand cable has a tension of T2 and makes an angle of ?2 with the ceiling. What is the tension of the left hand cable
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