A fireworks rocket is launched vertically upward at 40 m/s. At the peak of its trajectory, it explodes into two equal-mass fragments.One reaches the ground 2.75 seconds after the explosion. When does the 2nd reach the ground? CHr at the endAN/m. The5 m/s, andression ofin a 2400-kg car has plowed into a 1700-kg parked car with isbrake set. You measure skid marks showing that the combinedwreckage moved 25 m before stopping, and you determine a fric.tional coefficient of 0.75. What do you report for the drunk driv-78er's speed just before the collision?65. A fireworks rocket is launched vertically upward at 40 m/s. Atthe peak of its trajectory, it explodes into two equal-mass frag-ments. One reaches the ground 2.75 s after the explosion. Whendoes the second reach the ground?66. Two objects moving in opposite directions with the same speed vy reboundCHes a 4400-he pair iskm/h, andreckage.undergo a totally inelastic collision, and two-thirds of the initialkinetic energy is lost. Find the ratio of their masses.67. Explosive bolts separate a 950-kg communications satellite fromits 640-kg booster rocket, imparting a 350-N-s impulse. At whatrage, twon second,op verti-averagerelotivo11Samsung Quad CameraShot with my Galaxy A71 itsbrake set. You measure skid marks showing that the combinedwreckage moved 25 m before stopping, and you determine a frietional coefficient of 0.75. What do you report for the drunk driv.er's speed just before the collision?65. A fireworks rocket is launched vertically upward at 40 m/s. Atthe peak of its trajectory, it explodes into two equal-mass frag-ments. One reaches the ground 2.75 s after the explosion. Whendoes the second reach the ground?66. Two objects moving in opposite directions with the same speed vundergo a totally inelastic collision, and two-thirds of the initialkinetic energy is lost. Find the ratio of their masses.67. Explosive bolts separate a 950-kg communications satellite fromits 640-kg booster rocket, imparting a 350-N•s impulse. At whatrelative speed do satellite and boortorMN/m. The.5 m/s, andpression ofy reboundes a 4400-he pair iskm/h, andreckage.age, two1 second,op verti-CHaverageatonSamsung Quad CameraShot with my Galaxy A71

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