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A 1200 kg car is moving with a velocity of 20 m/s when the brakes are applied uniformly. The car stops after 10 s. Find the braking force on the car by finding the impulse of the force on the car first? Find the braking force on the car by finding the acceleration of the car?
During a certain interval after leaving the surface of the trampoline, her kinetic energy decreases to 230 J from 440 J. Explain how high does she rise during this interval? Neglect air resistance.
The bullet becomes embedded in the block. If the bullet-block system compresses the spring by a highest of 90cm, what was the speed of the bullet at impact with the block.
If a person radiates about 66 W of power at room temperature, how long does it take for person to radiate away the energy acquired by consuming a 230 Calorie doughnut.
Bacteria vary somewhat in size, but a diameter of 2.0 nanometers is not unusual. What would be (a) volume (in cubic centimeters) and (b) surface area (in square millimeters) of such a bacterium, assuming that it is spherical.
Universal beam section: bending moment, maximum stress, radius of curvature, A universal beam section has a second moment of area about its neutral axis of 6487 cm4 and its overall depth is 305 mm
A 3.00-kg object is fastened to a light spring, with the intervening cord passing over a pulley. The pulley is frictionless, and its inertia may be neglected.
During a crash test, a car moving at 60 km/ hr collides with a rigid barrier and comes to a complete stop in 200 ms, Find the total impulse imparted by the collision, Find the average collisional force
An arrow is fired with a speed of 23 m/s at a block of Styrofoam resting on a smooth surface. The arrow penetrates a certain distance into block before coming to rest relative to it. All through this process the arrow's deceleration has the magnit..
A baseball player hits a ball at 49.2m/s at an angle of 29.0 degrees above the horizontal. The outfield bleachers are 145 m away from the home plate.
A kid slides down from the top of a 3m high frictionless slide. When he reaches the bottom of the slide, he travels over a 2m long carpet with a 0.20 coefficient of kinetic friction, What height does he return to on the slide
A 70.0 kg construction worker stands at the far end of the beam. What is the magnitude of the torque about the point where beam is bolted into place.
A major-league catcher gloves a 92 {rm mi}/{rm h} pitch and brings it to rest in 0.15 {rm m}.If the force exerted by the catcher is 803 {rm N}, what is the mass of ball.
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