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A car of mass 961 kg coasts on a level road, starting with an initial speed of 14.6 m/s and coming to rest 15.4 s later. Find the frictional force acting on the car.
A car of mass 2200 kg collides with a truck of mass 4800 kg, and just after the collision the car and truck slide along, stuck together. The car's velocity just before the collision was m/s, and the truck's velocity just before the collision was..
A train moves due north at a rate of 9.6933 m/s relative to the ground. what is the magnitude of the ball's speed as measured by an observer on the ground
What is the difference between mas and weight? On earth, what is the weight of a 1 kg mass, When your textbook says that the moon "falls around the earth,
Calculate the classical momentum of a neutron traveling at 0.997c, neglecting relativistic effects
You use a HeNe laster, which has a wavelength of 633 nm, What is the vibrational frequency of the vibration corresponding to this peak
A car's starter motor draws 55 A from the car's battery when starting up. If the start-up time is 2.4 s, how many electrons pass a location in the circuit during that time
A rifel with a barrel length of 63cm fires a bullet with a horizontal speed of 380m/s. How long does it take for the bullet to come to rest after entering the wood
How far from a 53.6 mm focal-length lens must an object be placed if its image is to be magnified 2.12X and be real.
A small hole of a 2.6 cm diameter has developed in the hull of a ship 4.0 m below the waterline. At what rate is water flowing into the ship
Protons can escape from the surface of the sun if their kinetic energy is sufficient to overcome the gravitational potential energy. a) Calculate the minimum speed necessary for escape
A 1200 kg car carrying four 84 kg people travels over a rough washboard dirt road with corrugations 4m apart which causes the car to bounce on its spring suspension.
a ball moving at 5m/s collides head on elastically with a ball at rest. what are the velocities or the two balls after the collision
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