Artículos de esta sección

• Projectile motion in a match between Brazil and Argentina (8634)

  15 de mayo , por F_y_Q

  In a friendly football match between Argentina and Brazil, with the score tied 1–1 in the 90th minute, the referee awards a free kick to Brazil at a distance of 32 m from the goal. The player taking the shot is capable of imparting a speed of 30 m/s to the ball, and the defensive wall formed by the Argentine players, with an average height of 1.80 m, is positioned 12 m away from the point of the kick.

  Determine:

  a) What should be the launch angle in order to place the ball in the upper left corner of the goal without the wall blocking the shot?

  b) What should be the launch angle in order to place the ball in the lower left corner of the goal without the wall blocking the shot?

• Acceleration and time taken by a car to increase speed (8329)

  10 de octubre de 2024 , por F_y_Q

  A car, which has uniformly accelerated motion, increases its speed from 18 km/h to 72 km/h over a straight distance of 37.5 meters. Calculate the time taken for this journey and its acceleration.

• Calculation of braking acceleration (8312)

  16 de septiembre de 2024 , por F_y_Q

  Determine the acceleration of a car, initially moving at a speed of 120 km/h, knowing that it takes 20 seconds to come to a complete stop.

• Vertical upward lunch (8289)

  15 de agosto de 2024 , por F_y_Q

  A body is launched vertically upwards with an initial velocity of . How long will it take to reach its maximum height?

• Relationship between linear and angular quantities (7425)

  10 de diciembre de 2021 , por F_y_Q

  A car starts at and uniformly accelerates at for 5 s.

  a) Calculate the final velocity and the displacement of the car.

  b) Determine the diameter of the tire if the angular displacement is 60 radians.

  c) Calculate the final angular velocity and angular acceleration of the tires.