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an airplane with a speed of 714 ms is climbing upward at an angle of 495 deg with respect to the horizontal when the
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a projectile is launched from a 300 m high cliff at an angle of 30 degree with an initial velocity of 150 ms g98ms2
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a 650 kg skier initially at rest begins to slide down at a 100 degree slope if the hill is 30m long and the coefficient
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a 1600 kg car moves down a level highway under the actions of two forces one is a 1090 n forward force exerted on the
an 20 kg object initially at rest in free space explodes into three segments the masses of two of these segments are
a 27 cm tall object is placed in front of a concave mirror with a radius of 38 cm the distance of the object to the
when only the front wheels of an automobile are on a platform scale the scale balances at 75 kn when only the rear
the figure shows a rigid structure consisting of a circular hoop of radius r and mass m and a square made of four thin
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in the figure two particles each with mass m 095 kg are fastened to each other and to a rotation axis at o by two thin
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a spring with spring constant 250 nm is compressed by 013 m and then used to propel a 0035-kg ball directly upward if
the gauge pressure in both tires of a bicycle is 790 kpa if the bicycle and the rider have a combined mass of 780 kg
a laser beam enters a 155 cm thick glass window at an angle of 370deg from the normal the index of refraction of the
a 30g dart is shot straight up at 10ms at the same instant a 24g ball of cork is dropped from 20m above the dartpart a
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