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the only force on a 40-kg body as it moves along the x axis is given by fx 14 - 61x n where x is in m the velocity of
the near earth asteroid rendezvous near after traveling 21 billion km is meant to orbit the asteroid eros at a height
a 950kg car is at the top of a 40m -long 25 degree incline its parking brake fails and it starts rolling down the hill
a bird mass 31 g is flying at 111 ms when it flies into a glass window and bounces off at a speed of 41 ms the bird is
a 200-kg box rests on a horizontal surface the coefficient of static and kinetic friction between the box and the
a block of mass 400 kg initially at rest is accelerated to a final speed of 380 ms find the total work done on the
you are driving your car over a circular-shaped bump in the road that has a radius of curvature of 769 mif the car is
a 1300rm kg car coasts on a horizontal road with a speed of 17rm ms after crossing an unpaved sandy stretch of road
a 2500-kg car moving east at 100 ms collides with a 3000-kg car moving north the cars stick together and move as a unit
two objects with masses of 370kg and 780kg are connected by a light string that passes over a frictionless
a coil whose resistance is 60 ohms and one whose resistance is 40 ohms are connected in parallel to a 120-v linea what
in a broadway performance an 652-kg actor swings from a 450-m-long cable that is horizontal when he starts at the
for a car moving at speed v the force of air drag on the car is proportional to v2 suppose the power output of the car
a box is sliding down an incline tilted at an angle 140deg above horizontal the box is sliding down the incline at a
a 026- rock is thrown vertically upward from the top of a cliff that is 32m high when it hits the ground at the base of
an archer shoots an arrow toward a 300-g target that is sliding in her direction at a speed of 200 ms on a smooth
a crate of mass 47 kg is pushed across a level floor by a person if the person exerts a force of 22 n in the horizontal
an electromagnet is made by inserting a soft iron core into a solenoid the solenoid has 1800 turns radius 20 cm and
suppose that you have a 470 a 900 and a 130 k resistora what is the maximum resistance you can obtain by combining
an object is shot at 56 ms horizontally off the roof of a building which is 55 meters above the ground how long does it
a 506-cm diameter disk rotates with a constant angular acceleration of 210 rads2 it starts from rest at t 0 and a line
a truck of mass 10712 kg moving at a speed of 664 mph has lost its brakes fortunately the driver finds a runaway lane a
an elevator has mass 680kg not including passengers the elevator is designed to ascend at constant speed a vertical
a rock is thrown upward from the level ground in such a way that the maximum height of its flight is equal to its
a hockey puck is hit on a frozen lake and starts moving with a speed of 134 ms five seconds later its speed is 540 msa