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An object is being acted upon by three forces and moves with a constant velocity. One force is 60.0 N along the x-axis, the second is 75.0 N along a direction making a counterclockwise angle of 150.
A cart traveling at 0.3 m/s collides with stationary object. After the collision, the cart rebounds in the opposite direction. The same cart again traveling at 0.3 m/s collides with a different stat
The first person is initially moving forward with a speed of 2.50 m/s, and the second person is initially at rest. What are the velocities of the two people after the snowball is exchanged? Disregar
A loudspeaker of mass 16.0 is suspended a distance of = 2.20 below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of = 4.00 .
A tennis player standing 11.4 m from the net hits the ball at 2.96° above the horizontal. To clear the net, the ball must rise at least 0.294 m. If the ball just clears the net at the apex of it
A rifle with a barrel length of 61 cm fires a 8 g bullet with a horizontal speed of 440 m/s . The bullet strikes a block of wood and penetrates to a depth of 15 cm. What resistive force (assumed to
A parachutist descending at a speed of 13.4 m/s loses a shoe at an altitude of 54.2 m. What is the velocity of the shoe just before it hits the ground? The acceleration of gravity is 9.81 m/s2. Answ
Assuming the acceleration is constant during each time interval (but not necessarily the same in both intervals), what distance does the shuttle travel during the first 8.00s ?
He slides so that his speed is zero just as he reaches the base. How much mechanical energy is lost due to friction acting on the runner?
The car collides and becomes stuck to a 5000kg truck travelling west at along South Street at the intersection of South Street and Murdoch Drive. What is the final velocity of the vehicles after the
A 5.40 cm diameter wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.510 T pointing up. During the course of 0.130 s, the field is changed to one of 0.300 T
A car is driven 100 km west and then 90 km southwest. What is the displacement of the car from the origin? Assume the blocks are equal length.
A girl is pressing a book against a vertical wall. If the coefficient of friction between the book and the wall is .35, how hard would she have to push in order to allow the book to slide down at co
An automobile club plans to race a 750 kg car at the local racetrack. The car needs to be able to travel around several 175 m radius curves at 91 km/h. What should the banking angle of the curves be
Four 1.8 kg masses are located at the corners of a square 0.20 m on each side. Find the magnitude and direction of the gravitational force on a fifth 1.8 kg mass placed at the midpoint of the bottom
A woman finds the front windshield of her car covered with ice at -10.8°C. The ice has a thickness of 4.75 10-4 m, and the windshield has an area of 1.25 m2. The density of ice is 917 kg/m3. How
Two horizontal forces, 243 N and 158 N, are exerted in the same direction on a crate. Find the net horizontal force on the crate.
A 10-kg block of ice has a temperature of -7°C. The pressure is one atmosphere. The block absorbs 4.14 106J of heat. What is the final temperature of the liquid water?
A diver 60 deep in 10 fresh water exhales a 1.5-cm-diameter bubbleWhat is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20 ? Assume that the air b
When you take a bath, how many kilograms of hot water (47°C) must you mix with cold water (14°C) so that the temperature of the bath is 36°C? The total mass of water (hot plus cold) is 1
A submarine dives 110.0m at an angle of 10.0 degrees below the horizontal. What are the two components?
A gorilla weighs 8.00*10^2N and swingsfrom vine to vine. as the gorilla grabs a new vine, both vines make an angle of 30.0 degrees with the vertical. in such a condition of state of equilibrium, wh