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Q1. Throughout a hard sneeze, your eyes may shut for 0.41 s. If you are driving a car at 98 km/h during such a sneeze, how far does the car move during that time?
Q2. Only two forces act on a 3.1 kg object that moves with an acceleration of 3.2 m/s2 in the positive direction of the y axis. If one of the forces acts in the positive direction of an x axis and has a magnitude of 7.1 N, what is the magnitude of the other force?
A 9300 kg boxcar travelling at 23 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 15 m/s. What is the mass of the second car.
What is momentum of the block
A professor's office door is 0.80 wide, 3.0 high, and 5.0 thick; has the mass of 25; and pivots on frictionless hinges. A "door closer" is attached to the door and the top of door frame.
Agree on the mass of the earth knowing that the mean radius of the moon's orbit about the earth is 248,910 mi and that the moon requires 28.32 days to complete one full revolution about earth.
What is the magnitude of an average acceleration of the ball
What is the kinetic energy of α particle while it reaches the other plate? The distance between the plates is 33 cm.
What is an average velocity of the rock
What is magnitude of the runner total displacement
What is linear charge density of the insulating shell
Weight of a box is 150 pounds. The horizontal force required to move the box is 70 lb. What horizontal force is required if 60lbs is added to box.
What is the least time necessary for crossing
A proton is initially at rest at a point where the potential is 459 V. Sometime later the proton is at a point where the potential is 218 V. If no force other than an electrostatic force acts on the proton, what is its final kinetic energy.
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