A baseball (m=0.14 kg) with initial velocity of -40 m/s is hit. It leaves the bat with a velocity of 60 m/s after 0.01 s. a) calculate the impulse b) calculate the average net force applied to the ball by the bat
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A baseball (m=0.14 kg) with initial velocity of -40 m/s is hit. It leaves the bat with a velocity of 60 m/s after 0.01 s.
a) calculate the impulse
b) calculate the average net force applied to the ball by the bat
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- 3-A 20 g bullet is shot toward a relatively thin wooden block. The speed of the bullet before hitting the block is 200 m/s. The bullet passes through the block and continues with a speed of 50 m/s. a) How much is the impulse imparted on the bullet. b) If the bullet spends 0.02 s inside the block, what is the average force exerted on the bullet. edt zwollol bns soad yew all no qme or no abral doA fan blows a cart of mass m a distance d. The same fan blows a heavier cart of mass 2m through the same distance d. Which cart experiences the larger impulse? Options: A) The lighter cart experiences the larger impulse. B) Both carts experience the same impulse. C) The heavier cart experiences the larger impulse. D) The answer cannot be determined.15 kg horizontally toward the right with a speed of v 4.7 m/s as in the figure below. Neglecting A 79-kg fisherman in a 135-kg boat throws a package of mass m = water resistance, and assuming the boat is at rest before the package is thrown, find the velocity of the boat after the package is thrown m/s magnitude direction --Select--- m
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- 9. An athlete who is initially at rest in a squatted position jumps vertically upward and then lands going back to the original squatted position (ending at rest with the same center of mass height as at the start). The time period under consideration begins just before the athlete starts the upward motion and ends just after she has landed and comes to rest back in the squatted position. Compare the magnitude and directions of the impulse from the force of the ground on the athlete to the impulse from gravity on the athlete during this time period. Note: there are no other significant forces other than the ground and gravity acting on the athlete during this time period. ofmagnitude of the net force exerted in the direction on a 2.20-kg particle varies in time as shown in the figure below. F (N) 4 3 n 2 1 1 2 3 4 5 (a) Find the impulse of the force over the 5.00-s time interval. I = (b) Find the final velocity the particle attains if it is originally at rest. = N's (c) Find its final velocity if its original velocity is -2.30 î m/s. V₁ m/s avg t(s) m/s = (d) Find the average force exerted on the particle for the time interval between 0 and 5.00 s. F N