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A dog running in an open field has components of velocity Vx = 3.3 m/s and Vy = -2.3 m/s at time t1 = 11.4 s. For the time interval from t1 = 11.4 s to t2 = 22.6 s, the average acceleration of the dog has magnitude 0.43 m/s^2 and direction 25.0 degrees measured from the + x - axis toward the + y -axis . At time t2 = 22.6 , what are the x- and y-components of the dog's velocity? What is the magnitude of the dog's velocity? What is the direction of the dog's velocity (measured from the toward the + x- axis and +y - axis)?
At the instant a traffic light turns green a car that has been waiting at the intersection starts ahead with a constant acceleration of 2.00 m/s2. Determine the speed the car when it passes the truck
A square loop 15.0cm on a side has a resistance of 8.05? . It is initially in a 0.395T magnetic field, Calculate the electric energy dissipated in this process
You are designing the section of a roller coaster ride shown in the figure. Previous sections of the ride give the train a speed of 11.9 m/s at the top of the incline, FIND the minimum radius you can use for the semi-circular hump
A ball is launched from the top edge of a building 32.8 m high at a speed of 23.7 m/s at an angle of 15.0 degrees above the horizontal. Find the horizontal distance from the building at which the ball lands
In February 1955, a paratrooper fell 370 m from an airplane without being able to open his chute but happened to land in snow, find the magnitude of the impulse on him from the snow
In coming to a stop, a car leaves skid marks 77m long on the highway. Assuming a deceleration of 8m/s2, estimate the speed of the car just before braking.
Compute the force of tension or compression
A 2m3 balloon filled with helium at sea level climbs to 10,000 m. The temperature at sea-level is 20C, What is the volume of the balloon at 10,000 m
A ball traveling in a circle with a constant speed of 3 m/s has a centripetal acceleration of 4 m/s2. What is the radius of the circle
A 3.4 kg bucket of water is raised from a well by a rope. If the upward acceleration of the bucket is 2.2 m/s2, find the force exerted by the rope on the bucket
a glider of 500 gr. is 10 cm. above the table at the beginning of its motion and 6 cm. above the table at the end. what is the theoretical value of kinetic energy at the bottom
A lamp hangs vertically from a cord in a descending elevator that decelerates at 1.4 m/s2. If the tension in the cord is 86 N, what is the lamp's mass
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