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determine the magnitude and direction of the resultant of the concurrent force system that acts at poit A if FAB=80kN, FAC=60KN and FAD=45KN. Given a=3m and b=6m
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- At the end of a run Sam (116kg) crashes into a 85kg blood-rider who was running in the wrong direction (exactly opposite of Sam) on the track at 7.2 m/s. During the collision Sam exerts and average force of 3650N on the blood-rider. Sam was traveling 4.2 m/s as he slowed down after the run. a) how big is the average force the blood rider exerts against Sam during the collision? B) if this is the only horizontal force acting on each during the collision, what average horizontal acceleration does each experience during the collision? c) if the collision is perfectly ineleastic, how fast and in what direction will Sam and the blood rider be moving immediately after the collision?Bullets and other missiles fired at Superman simply bounce off his chest. Suppose that a gangster sprays Superman’s chest with bullets of mass m at the rate of n. The speed of each bullet is v and the angle of each bullet with respect to the plane of superman’s chest is θ. Suppose too that the bullets bounce off his chest specularly with no change in speed. Find the average force exerted by the stream of bullets on Superman’s chest. The answer is F=mn2vsin(theta). Can someone explain with steps, how did we get this?The mass of a particular eagle is twice that of a hunted pigeon. Suppose the pigeon is flying north at v;2 17.9 m/s when the eagle swoops down, grabs the pigeon, and flies off. At the instant right before the attack, the eagle is flying toward the 41.1° below the horizontal and a speed pigeon at an angle 0 = of Vi,1 = 34.1 m/s. What is the speed of the eagle immediately after it catches its prey? Vi,2 31.15 speed: m/s Incorrect What is the magnitude of the angle, measured from horizontal, at which the eagle is flying immediately after the strike? 42.15 magnitude of angle: Incorrect
- A proton, moving with a velocity of vi, collides elastically with another proton that is initially at rest. If the speed of the initially moving proton is 2.30 times the speed of the initially at rest proton, find the following. (a) the speed of each proton after the collision in terms of vi initially moving proton initially at rest proton Need Help? (b) the direction of the velocity vectors after the collision initially moving proton initially at rest proton Submit Answer x Vi Read It X V relative to the +x direction relative to the +x direction DAn acrobatic buccaneer swings from one rope to another in the rigging of a pirate ship. As she grasps the rope, her mass is m, 63.5 kg; knots on the rope make the rope's effective mass m, 1.50 kg. From the height %D she grabs the rope, she swings up a further distance of 1.50 m. Assuming that her collision with the rope is perfectly inelastic, answer the following questions: {Note: Treat as a ballistic pendulum problem!} mehanical a) Does the buccaneer's collision with the rope conserve her-kietie en- ergy? {Y/N?} b) Neglecting any energy losses due to friction, air drag, etc., determine the velocity of the buccaneer + rope system right after she grabs the rope in m/s. {Assume a closed system, thus Conservation of Energy} c) Is it possible to calculate the buccaneer's initial speed before she grabbed the rope from the information given? {Y/N?}15-69. A 300-g ball is kịcked with a velocity of va = 25 m/s at point A as shown. If the coefficient of restitution between the ball and the field is e = 0.4, determine the magnitude and direction 0 of the velocity of the rebounding ball at B. VA = 25 m/s 30
- Two a particles separated by an enormous distance approach one another. Each has an initial speed of 3.1 X 10 m/s. Find their minimum separation distance assuming they never deflect from their original path. ) (K/U, A, T/I) m, = 6.6 X 1027 kgWhat’s the center of mass for each situation?Problem-3: A ball of mass 200 gram strikes a wall perpendicular to its surface at a speed of 10 m/s and rebounds back at the speed of 5 m/s. It is in contact with the wall for 2 milli-sec. Find the average force exerted by the wall on the ball.
- The particle shown below is at rest, where F = 65N and o = 37.4 deg Find the magnitudes of F_{1} and F_{2}A bullet of mass ‘m’ strikes a pendulum bob of mass 2m with velocity V. It passes through and emerges out with a velocity from bob. If the length of pendulum is l. what should be minimum value of v if the pendulum bob will swing through a complete circle.