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A tortoise and hare start from rest and have a race. As the race begins, both accelerate forward. The hare accelerates uniformly at a rate of 1.0 m/s2 for 4.9 seconds. It then continues at a constant speed for 12.4 seconds, before getting tired and slowing down with constant acceleration coming to rest 80.0 meters from where it started. The tortoise accelerates uniformly for the entire distance, finally catching the hare just as the hare comes to a stop. What is the acceleration of the tortoise?
The moon orbits the earth at a distance of 3.85 x 108 m. Assume that this distance is between the centers of the earth, Find the period for the moon's motion around the earth
find out the magnitude of an acceleration
Cliff and Will are carrying a uniform 2.0m board of mass 74kg. Will is supporting the board at the end while cliff is 0.6m from the other end, Find the normal forces exerted by Cliff and Will
A fast train has a speed of 111 km/hr. Because its wheels have a limited grip to the railway, what speed must the train mantain to keep the acceleration at the limit
A cart of mass m = 1.4 kg is released from the top of a ramp sloped ? = 13° relative to the horizontal. The length of the ramp is L =9.6 m. find the car's Kinetic Energy at the bottom of the ramp
The step-down transformer in a local neighborhood reduces the voltage from a 7,200 V line to 120 V. If there are 125 loops on the secondary, how many are on the primary coil
A sample of an unknown material appears to weigh 280 N in air and 180 N when immersed in alcohol of specific gravity 0.700. What is the density of the material
An extension cord made of two wires of diameter 0.129cm (no. 16 copper wire), How much power is dissipated in the cord
A 1.00 kg object is attached to a horizontal spring. The spring is initially stretched by 0.500 m, and the object is released from rest there. What is the maximum speed of the object
Two slits spaced 0.500mm apart are placed 78.0cm from a screen. What is the distance between the second and third dark lines of the interference pattern on the screen
questiona 5kg block at first has a speed of 1.5ms at the top of a 30?nbspincline and slides a distance of 5.0m down
A 135-kg platform oriented horizontally consists of a uniform disk of radius 1.59 m and can rotate about the vertical axis through its center. Find the moment of inertia of this system
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