Physics

the diagram shows an athlete crossing the finishing line in a race. as she crosses the finishing line, her speed is 10 m/s. she slows down to a speed of 4 m/s. a)the mass of the athlete is 71 kg. calculate the impulse applied to her as she slows down.
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A(n) 0.298 kg soccer ball approaches a player horizontally with a speed of 15 m/s. The player illegally strikes the ball with her hand and causes it to move in the opposite direction with a speed of 17 m/s..What is the magnitude of the impulse de- livered to the ball by the player? Answer in units of kg m/s.
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a rocket flies directly upward with an initial velocity of 76.5 m/s. what is the maximum height the rocket will reach?
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a force f is exerted on a 5 kg block to move it across a rough surface, as shown above. the magnitude of the force is initially 5 n, and the block moves at a constant velocity. while the block is moving, the force is instantaneously increased to 12 n. how much kinetic energy does the block now gain as it moves a distance of 2 m?
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A wheel is rotating about an axis that is in the z-direction. The angular velocity z is -6.00 rad/s at t = 0, increases linearly with time, and is +4.00 rad/s at t = 10.0 s. We have taken counterclockwise rotation to be positive.How long is the time interval during which the speed of the wheel is increasing?
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Describe what the motion of the rigid system will be if:a. The first condition for equilibrium is not satisfied.b. The second condition for equilibrium is not satisfied.c. Neither condition for equilibrium is satisfied.
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A 60-kilogram runner has 1920 joules of kinetic energy. At what speed is she running?.
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An ice skater is spinning with her arms out and is not being acted upon by an external torque. a. When she pulls her arms in close to her body what happens to her angular momentum? b. When she pulls her arms in, what happens to her moment of inertia? c. What happens to her angular speed when she pulls her arms in? d. What happens to her rotational kinetic energy when she pulls her arms in?
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What are the 3 wavelengths?
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What is observation of demonstrating the force of attraction and repulsion between two current parallel carrying conductor
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you may have noticed that when you compress a bicycle pump, the body of the pump gets warmer. a) what is the sign of
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Three particles having charges of equal magnitude q are fixed at the conrners of an equilateral triangle as shown. two of the charges are negative: the other is positive. which of the following vectors best represents the direction of the resultant electric field at point p, the center of the triangle?
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In the meeting of the Gram Sabha so far, what are the problems that are being discussed? What sort of solutions is being suggested?
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Cynthia's broker charges her a commission of $88 for every $1000 of stock bought or sold. Cynthia bought2,000 shares of Ombor Medical Supplies at $35.49 apiece. As the price rose and fell, she sold off part of herholdings. When the price rose to $48.57, she sold 600 shares. The price fell somewhat to $46.10, so she sold1,150 of her shares. When the price climbed to $53.46, she sold off the remainder of her holdings. How muchprofit did Cynthia make in total?a. $9,889.82b.$24.542.00c. $16,312.06d. $74,799.58Please select the best answer from the choices provided
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What are genetic diseases give one example?
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What is maximum loading capacity?
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i need help creating a realistic planet with the following information
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How do you calculate ammeter reading?
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What are the formulas to calculate energy wavelength and frequency?
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the vertical and horizantal distance of the progetile will be equal if angel of progectile is
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If you catch the ruler 8.3 cm from the lower end, what is your reaction time?
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Which forces could be used to conduct a simple experiment that tests the effect of force on an object?
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A rectangular copper strip is 20 cm long, 0.1 cm wide and 0.4 cm thick. Determine the resistance between (i) opposite ends (ii) opposite sides. The resistivity of copper is 1.7 106 cm
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the (nonconservative) force propelling a 1.50 x 103 kg car up a mountain road does 4.70 x 106 j of work on the car. the car starts from rest at sea level and has a speed of 27.0 m/s at an altitude of 2.00 x 102 m above sea level. calculate the work done on the car by the combined forces of friction and air resistance, both of which are nonconservative forces.
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