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q1 a car is travelling with a velocity of 880 kmh it accelerates at a constant rate of 20 ms2 if the acceleration lasts for 56s what is the final
q1 a weight with a mass of 57 kg is suspended from a point near the right hand end of a uniform boom with a mass of 60 kg to support a uniform boom a
q1 a toolbox is carried from the base of the ladder at point a the toolbox comes to a rest on a scaffold 50 m above the ground what is the magnitude
q1 a brick is thrown upward from the top of a building at an angle of 45deg to the horizontal and with an initial speed of 10 ms if the brick is in
q1 when babe ruth hit a homer over the 75 -high right-field fence 98 from home plate roughly what was the minimum speed of the ball when it left the
q1 a rock of mass m 10 kg is tied to a string of length l 19 m and is twirled in a vertical circle the speed v of the rock is constant that is it
q1 gamma-ray busters are objects in the universe that emit pulses of gamma rays with high energies the frequency of the most energetic bursts has
q1 a 350-kg child swings in a swing supported by two chains each 290 m long the tension in each chain at the lowest point is 352 n find the childs
q1 an engine does 20000 j of work and rejects 6120 j of heat into a cold reservoir whose temperature is 285 k what would be the smallest possible
q1 a chair of weight 125 n lies atop a horizontal floor the floor is not frictionless you push on the chair with a force of f 350 n directed at an
q1 an object weighs 302 n in the air when tied to a string connected to a balance and immersed in water it weighs 220 n when it is immersed in oil it
q1 a kid fires water horizontally from a squirt gun held 16 above the ground it hits other kid 24 away squares in the back at a point 085 above the
q1 a 20 g rifle bullet travelling 215 ms buries itself in a 37 kg pendulum hanging on a 28 m long string which makes the pendulum swing upward in an
q1 a small metal bead labelled a has a charge of 29 nc it is touched to metal bead b initially neutral so that the two beads share the 29 nc charge
q1 an airplane flies 200 km due west from city a to city b and then 315 km in the direction of 330deg north of west from city b to city cq2 a worker
q1 a 20 kg piece of wood slides on the surface the curved lateral sides are perfectly smooth no resistance but the horizontal bottom is rough and has
q1 in a gas at standard temperature and pressure what is the length of the side of a cube that contains a number of molecules equal to the population
q1 a race car has a mass of 718 kg it starts from rest and travels 450 m in 30 s the car is uniformly accelerated throughout the entire time what net
q1 an electron with a speed of 612 times 108 cms in the positive direction of an x axis enters the electric field of magnitude 270 times 103 nc
q1 a 0850 kg block is attached to a spring with spring constant 160 nm while the block is sitting at rest a student hits it with a hammer and almost
q1 what is an acceleration of two falling sky divers mass 1200 kg including parachute while the upward force of air resistance is equal to one-fourth
q1 a car carrying a 77-kg test dummy crashed into a wall at 27ms and is brought to rest in 01 s demonstrate that the average force exerted by the
q1 two balls are rolled off a tabletop that is 088 m above the floor ball a has a horizontal velocity of 50 ms and that of ball b is 80 msa how long
q1 a jetliner can fly 532 hours on a full load of fuel without any wind it flies at the speed of 220 ms the plane is to make a round-trip by heading
q a 2500-kg sport utility vehicle travelling at 92 kmh can be stopped in 025 s if it hits a concrete wall assume a 60 kg person was in the car that