In a game of egg-toss, you and a partner are throwing an egg back and forth trying not to break it. Given your knowledge of momentum, what hint could you give to your partner to keep the force of impact on the egg as low as possible? Clearly explain your answer.
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In a game of egg-toss, you and a partner are throwing an egg back and forth trying not to break it. Given your knowledge of momentum, what hint could you give to your partner to keep the force of impact on the egg as low as possible? Clearly explain your answer.
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- In tae-kwon-do, a hand is slammed down onto a target at a speed of 15.4 m/s and comes to a stop during the 4.29 ms collision. Assume that during the impact the hand is independent of the arm and has a mass of 0.770 kg. (the magnitude of the impulse is 11.9 kg*m/s) What is the magnitude of the average force on the hand from the target? (PLEASE show how you get this answer )For the situation in the figure below, use momentum conservation to determine (a) the magnitude and (b) the direction of the final velocity of ball 1 after the collision. The angle = 56.0⁰. (a) Number (b) Number i 101 = 0.900 m/s m₁ = 0.150 kg i ¹02=0.540 m/s m₂ = 0.260 kg Units +v Units ly +V (a) UF1x (b) (a) Top view of two balls colliding on a horizontal surface. (b) This part of the drawing shows the x and y components of the velocity of ball 1 after the collision. 35.0* 2 = 0.700 m/s ·+xSally finds herself stranded on a frozen pond so slippery that she can't stand up or walk on it. To save herself, she throws one of her heavy boots horizontally, directly away from the closest shore. Sally's mass is 64.0 kg, the boot's mass is 5.00 kg, and Sally throws the boot with speed equal to 26.5 m/s. For all parts, assume the ice is frictionless and Ihat the positive direction is towards the shore. What is Sally's speed vs immediately after throwing the boot? -2.07 m/s Us = What is the displacement Aro of the center of mass of the Sally-boot system, relative to where she threw the boot, after AF = 2.75 10.0 s? How much time i does it take Sally to reach the shore, a distance of 30.0 m away from where she threw the boot? 14,49
- A soccer player takes a corner kick, lofting a stationary ball 36.0° above the horizon at 25.0 m/s. If the soccer ball has a mass of 0.425 kg and the player's foot is in conta s, find the x- and y-components of the soccer ball's change in momentum and the magnitude of the average force exerted by the player's foot on with it for 3.70 x 10-2 ball. HINT (a) the x- and y-components of the soccer ball's change in momentum (in kg· m/s) AP x kg • m/s Apy kg · m/s (b) the magnitude of the average force exerted by the player's foot on the ball (in N) Need Help? Read It Watch ItCh. 7 # 13 . Please see attached image for Physics question . Thank you .a) What is the total momentum of this two-astroid system? (Give answer in component form). Don’t forget to include appropriate units in your answers!
- A soccer player takes a corner kick, lofting a stationary ball 37.0° above the horizon at 18.0 m/s. If the soccer ball has a mass of 0.425 kg and the player's foot is in contact with it for 5.10 x 10-² s, find the x- and y-components of the soccer ball's change in momentum and the magnitude of the average force exerted by the player's foot on the ball. HINT (a) the x- and y-components of the soccer ball's change in momentum (in kg . m/s) kg. m/s Apx = Apy kg. m/s (b) the magnitude of the average force exerted by the player's foot on the ball (in N) NA 0.34 kg softball has a velocity of 19 m/s at an angle of 35° below the horizontal just before making contact with the bat. What is the magnitude of the change in momentum of the ball while it is in contact with the bat if the ball leaves the bat with a velocity of (a)25 m/s, vertically downward, and (b)25 m/s, horizontally back toward the pitcher?A 4.00 g bullet has a muzzle velocity of 230 m/s when fired by a rifle with a weight of 40.0 N. (a) Determine the recoil speed (in m/s) of the rifle. Choose a sign convention and see if you can write a statement of conservation of momentum that will allow you to determine the desired quantity. Don't forget that you have been given the weight rather than the mass of the rifle. m/s (b) If a marksman with a weight of 775 N holds the rifle firmly against his shoulder, determine the recoil speed (in m/s) of the shooter and rifle. Your approach to part (a) will also work for part (b). The only difference is that the mass of the marksman must now be included. m/s
- Two shuffleboard disks of equal mass, one orange and the other green, are involved in a perfectly elastic glancing collision. The green disk is initially at rest and is struck by the orange disk moving initially to the right at vi = 4.40 m/s as in Figure a, shown below. After the collision, the orange disk moves in a direction that makes an angle of 8 = 40.0° with the horizontal axis while the green disk makes an angle of = 50.0° with this axis as in Figure b. Determine the speed of each disk after the collision. of=1 m/s m/s Vgf= Before the collision After the collision. b of ⓇPlease make sure this is right!! (Mechanic Physics) The figure shows a two-ended “rocket” that is initially stationary on a frictionless floor, with its center at the origin of an x axis. The rocket consists of a central block C (of mass M = 5.10 kg) and blocks L and R (each of mass m = 1.30 kg) on the left and right sides. Small explosions can shoot either of the side blocks away from block C and along the x axis. Here is the sequence: (1) At time t = 0, block L is shot to the left with a speed of 3.10 m/s relative to the velocity that the explosion gives the rest of the rocket. (2) Next, at time t = 0.60 s, block R is shot to the right with a speed of 3.10 m/s relative to the velocity that block C then has (after the second explosion). At t = 3.20 s, what are (a) the velocity of block C (including sign) and (b) the position of its center?A 1500 kg car traveling eastwards at 25 m / s collides with a 2500 kg load truck going north at a speed of 20 m / s as shown in the figure. Find out the magnitude and direction of the speed of the wreck after the collision, taking into account that the vehicles had a completely inelastic collision.