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Question 1: What is the kinetic energy of a 5 kg mass moving at 5 m/s ?
Question 2: An object with weight 5Kg is freely falling form 10 meters height.
a) What is the Potential energy of that object?
b) How much force is applied on that object?
Question 3: How much force is needed to accelerate a 700 kg car 2 m/s2
Question 4: What acceleration will result when a 200 N net force applied to a 25 kg object?
A 44-kg pole vaulter running at 11 m/s vaults over the bar. Her speed when she is above the bar is 1.0 m/s. determine her altitude as she crosses the bar
A canon sends a shell of mass 35.0 kg into air with an initial speed of 135 m/s, in the direction of 55° above the horizontal. What is the work delivered by the canon on the shell
A fireman d = 60.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of θi = 36.0° above the horizontal, At what height will the stream of water strike the building
A 461.1N child and a 114N child sit on either end of a 2.9m long seesaw. suppose a 280N child sits .196m from the 461.4N child. how far from the pivot must a 218N child sit to maintain rotational equilibrium?
Romeo is chucking pebblesgently up to Juliet's window, and he wants the pebbles to hit thewindow with only a horizontal component of velocity. How fast are the pebbles going when they hit her window
What is the minimum coefficient of statistic friction between the tires and the track that will maintain this situation? If the tiles have a radius of 1.2m, what is the angular velocity of the tire? How many rotations do the tiles make on a single..
A 0.075-kg arrow is fiered horizontally. The bowstring exertsan arerage force of 65 N on the arrow over a distance of 0.90m. With what speed does the arrow leave the bow
suppose a spacecraft is sent to study an object somewhere in our milky way galaxy. this spacecraft finds out that the
A light bulb is connected to a 240-V wall socket. The current in the bulb depends on the time t according to the relation I = (2.828 A) sin[(345.4 Hz)t]. What is the average power delivered to the light bulb
An 830 kilogram race vehicle can drive around an unbanked turn at a max speed of 58 m/s without slipping. The turn has a radius of curvature 160 meter. Evaluate the maximum speed if no down force acted on car
A thin soap film (n = 1.35) is suspended in air. The spectrum of light reflected from the film is missing two visible wavelengths of 490.8 nm and 589.0 nm, What is the thickness of the soap film
A proton ,a neutron and an alfa particle ,accelerated through the same potential difference ,enter a region of uniform magnetic field moving at right angles to B.(a) compare their kinetic energies .(b) if the radius of the proton’s circular path is 1..
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