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In a court hearing, a physicist reconstructs an accident in the following way. A sports car of mass m1=1000kg collided with a parked truck of mass m2=1500kg. From the skid marks, it is estimated that the speed of the truck immediately after the collision was 21.6m/s, at an angle of 33.7 degrees with respect to the direction of the incoming sports car. The sportscar left skid marks at an angle of 60 degrees to its initial direction, but did not stop, leaving the scene of the accident badly damaged.
(a) Determine the speed of the sports car immediately after the collision.
(b) Determine the initial speed of the sports car in units of m/s and miles/hour. The accident occurred on a quiet residential street. Was the sports car speeding?
A child is walking toward a wall at a speed of 1.00m/s in a direction at right angles to the wall. what is the frequency of the whistle
Through what maximum angle θmax will the reference line turn in the positive direction? What are (b) first and (c) second times the reference line will be at θ = θmax/3? At what (d) negative time and (e) positive time will the reference line be at..
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A point charge +6.7 uC is placed at the origin, and a second charge -3.6 uC is placed in the X - Y plane at (0.40 m , 0.55 m ). Where should a third charge be placed in the plane so that the net force acting on it is zero? Express your answers usi..
NASA launches a satellite into orbit at a height above the surface of the Earth equal to the Earth's mean radius. The mass of the satellite is 740 kg. How much gravitational force does the satellite experience
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The intensity of electromagnetic waves from the sun is 1.4kW/m2 just above the earth's atmosphere. How many Joules of solar energy fall on your back as you work on your tan for 1.1hr
how fast the air flow over the upper surface of the wing. What is the coefficient of kinetic friction between the box and the floor.
A cardinal (Richmondena cardinalis) of mass 4.30×10-2 and a baseball of mass 0.14 have the equal kinetic energy. What is the ratio of the cardinal's magnitude of momentum to the magnitude of baseball's momentum.
What is the average force exerted on the ball. How fast (in ) must a centrifuge rotate if a particle 6.50 from the axis of rotation is to experience an acceleration of 125,000 's.
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