A 2.50-kg object is moving in a plane, with its x and y coordinates given by x = 6t² - 2 and y = 5t³ + 1, where x and y are in meters and t is in seconds. Find the magnitude of the net force acting on this object at t = 1.60 s. N
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- A 2.70-kg object is moving in a plane, with its x and y coordinates given by x = 8t2 - 3 and y = 4t3 + 3, where x and y are in meters and t is in seconds. Find the magnitude of the net force acting on this object at t = 2.30 s. NA 10.0 kg mass is acted on by the two forces: and F1=(3.0N)i+(2.0N)j and F2=(10.0N)i+(7N.0)7 a) Express the summation of these two forces in unit vector notation. That is: b) What is the acceleration of this mass while these forces are acting? Write your answer in unit vector notation. c) What is the direction of the acceleration (give the angle of acceleration with the x axis)?As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air at a speed of 17.0 m/s. In the process, he moves his hand through a distance of 1.45 m. If the ball has a mass of 0.150 kg, find the force he exerts on the ball to give it this upward speed.N
- In God of War, Kratos pushes a canoe with his son in it across the sand towards water. Kratos applies a force of 751. N in the positive direction while friction causes a 395. N horizontal force is applied in the opposite direction. What is the net force on the boat?A planet of mass 6 × 1024 kg is at location m. A star of mass 9 x 1030 kg is at location m. What is the force exerted on the planet by the star? (It will probably be helpful to draw a diagram, including the relevant vectors.) on planet = 2.50e21 Additional Materials eBook NA block is pushed across a rough horizontal surface by the force shown. The coefficient of static friction between the block and the surface is 0.170 , the mass of the block M = 2.00 kg , and the force angle 0 = 29.0 ° . F M Find the minimum magnitude of the force, required to set the block in motion. Fmin N
- An object with a mass of 1.76 kg is initially at rest upon a horizontal, frictionless surface. An applied force of 3.04 N i acts on the object for 2.08 s. What is the object's final speed? Enter a number rounded to 2 decimal places and assume the answer has proper SI Units.Problem 5: An object of mass m has these three forces acting on it (there is no normal force, "no surface"). F = 3 N, F2 = 10 N, and F3 = 5 N. When answering the questions below, assume the x-direction is to the right, and they-direction is straight upwards. F, F What is the net force in component form, in terms of F1, F2, F3, and the unit vectors i and j F = 7 8 HOME a F| i j 4 5 y d. F1 1 | 2 3 F2 F3 +| - END h P vol BACKSPACE DEL CLEAR Submit Hint Feedback I give up! What is the magnitude of the net force, in newtons? What is the angle e, in degrees, of the net force, measured from the +x-axis? Enter an angle between -180° and 180°. What is the magnitude, Ja of the acceleration, in meters per square second, if the block has a mass of 8.9 kg?Which of the following is NOT true of the force of gravity? O There is a gravitational force between any objects that are massive. It is inversely proportional to the square of the distance between the two bodies. O It is proportional to the mass of each object. O The force of gravity only acts on things that are close together.
- Two concurrent forces act at right angles to each other on an object. If the magnitude of one force is 40. N and the magnitude of the resultant is 50. N what is the magnitude of the second force?A chandelier hangs h = 0.62 m down from two chains of equal length. The chains are separated from one another by a length L = 0.45 m at the ceiling. The chandelier has a mass of m = 21 kg.Randomized Variablesh = 0.62 mL = 0.45 mm = 21 kgWhat is the angle, θ in degrees, between one of the chains and the vertical where it contacts the chandelier? Write an expression for FT,y, the magnitude of the y-component of the tension in one chain, in terms of the given information and variables available in the palette. FT,y = Using your previous results, find the tension, FT in Newtons, in one chain. FT =A football punter accelerates a football from rest to a speed of 15 m/s during the time in which his toe is in contct with the ball (about 0.19 s). If the football has a mass of 0.46 kg, what average force does the punter exert on the ball? N