The magnitude of the net force exerted in the x direction on a 2.50-kg particle varies in time as shown ir Figure P9.11. Find (a) the impulse of the force, (b) the final velocity the particle attains if it is originally a rest, (c) its final velocity if its original velocity is -2.00 m/s, and (d) the average force exerted on the particle for the time interval between 0 and 5.00 s. (include the directions of the vector quantities in a, b, c, and d) F (N) 4 3 1 1 (s) 0 1 2 3 4 5 Figure P9.11

A 71.1-kg basketball player jumps vertically and leaves the floor with a velocity of 1.91 m/s upward. (a) What impulse does the player experience? magnitude      N · s direction      ---Select--- upward downward forward backward The magnitude is zero. (b) What force does the floor exert on the player before the jump? magnitude      N direction      ---Select--- upward downward forward backward The magnitude is zero. (c) What is the total average force exerted by the floor on the player if the player is in contact with the floor for 0.450 s during the jump? magnitude      N direction      ---Select--- upward downward forward backward The magnitude is zero.

Problem 2. A force acts on a 25.0 kg object with the magnitude as a function of time as shown in figure below. (a) Determine the impulse imparted by the force on the object between 0 and 30 seconds. (b) Determine the final velocity of the object if it had an initial velocity of 20.0 m/s in the negative direction. (c) Find the average force between t = 0 and 30 seconds. F,(N) 1000- t (s) 30 0- 10 20

A ball of mass .62 kg has an initial velocity of 7 m/s and moves at an angle of 32° above the +x-direction. The ball hits a vertical wall and bounces off so that it is moving 32° above the -x-direction with the same speed. (a) What is the magnitude of the impulse delivered by the wall? Number (b) What is the direction of the impulse delivered by the wall? OO O O +x-direction -x-direction +y-direction -y-direction None of the above

A 0.150 kg lump of clay is dropped from a height of 1.75 m onto the floor. It sticks to the floor and does not bounce. What is the magnitude of the impulse J imparted to the clay by the floor during the impact? Assume that the acceleration due to gravity is g = 9.81 m/s². J = The force exerted by the floor on the clay is plotted as a function of time in the figure. What must have been the maximum force Fmax exerted by the floor on the clay? Fmax kg. m/s = N Force (N) F max 0 F 7.5 ms Time (ms)

An estimated force-time curve for a baseball struck by a bat is shown in the figure below. Let Fmax = 19,000 N, t₂ = 0.5 ms, and t = 3 ms. From this curve, determine the following. F (N) Fmax IA. t (ms) ta 0 (a) the magnitude of the impulse delivered to the ball N s (b) the average force exerted on the ball kN

irai, a 50 kg figure skater, lands on the ice her feet after landing the triple axel and immediately jumps up again to perform a double toe-loop. The instant before her skates first touch the ice after the triple axel, her vertical velocity is 3 m/s downward. Her velocity is 2 m/s upward when her skates leave the ice for the second jump, 0.8 s later. (a) What is the vertical impulse exerted on Mirai during the 0.8 s she is in contact with the ice between the two jumps? (b) What is the average net vertical force exerted on Mirai during this 0.8 s? (c) What is the average reaction force exerted upward by the ice on Mirai during the 0.8 s?

max 20,000 N, t, = 1.5 ms, and t, = 3 ms. From this curve, determine the An estimated force-time curve for a baseball struck by a bat is shown in the figure below. Let F, following. Fmax F (N) t (ms) ta (a) the magnitude of the impulse delivered to the ball N.s (b) the average force exerted on the ball kN

(a) If the impulse experienced during the collision is 200 Ns, use the information in the plot to calculate the peak force experienced during the collision.  (b) Calculate the average force experienced during the collision.

A 71.1-kg basketball player jumps vertically and leaves the floor with a velocity of 1.87 m/s upward. (a) What impulse does the player experience? magnitude N.S direction ---Select- (b) What force does the floor exert on the player before the jump? magnitude direction ---Select- (c) What is the total average force exerted by the floor on the player if the player is in contact with the floor for 0.450 s during the jump? magnitude direction ---Select--