Physics, 25.03.2020 06:40, avanelson01
A(n) 5 kg object moving with a speed of 8.7 m/s collides with a(n) 18 kg object moving with a velocity of 11 m/s in a direction 20◦ from the initial direction of motion of the 5 kg object. 8.7 m/s 11 m/s 18 kg 5 kg 20◦ What is the speed of the two objects after the collision if they remain stuck together? Answer in units of m/s.
Answers: 2
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Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star
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For general projectile motion, when the projectile is at the highest point of its trajectory, its acceleration is zero? a)the horizontal and vertical components of its velocity are zero. b) its velocity is perpendicular to the acceleration. c)the horizontal component of its velocity is zero. d)its velocity and acceleration are both zero.
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Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.
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In which situation is the acceleration of a car negative? question 5 options: a)the velocity of a car was 75 km/hr over 4 hours. b)the velocity of a car reduced from 50 km/hr over one minute. c)the velocity of a car increased from 40 km. h to 75 km/h over 15 minutes. d)the velocity of a car was 45 km/hr at 2: 00pm and at 4: 00pm its velocity was 85 km/ht.
Answers: 2
A(n) 5 kg object moving with a speed of 8.7 m/s collides with a(n) 18 kg object moving with a veloci...
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