A boat with mass of 7.4 * 10* kg is traveling at 6.1 * 10' m/s. What is the magnitude of the force required to stop the boat if it undergoes a displacement of 1.2 * 10' m? Express your answer in Newtons.
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A: the work done is equal to the kinetic energy gained by the ball,
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A: a=dv/dt dv= change in velocity = 6.0 m/s dt=0.7 s a=6.0/0.7=60/7 m/s^2
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A: Use the equation of motion to solve for the acceleration of the ball.
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A: Given: The mass of sprinter (m) = 68.6 kg. Force exerted F = 704 N. Time (t) = 0.813 s.
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A: Step 1It is given that
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A: Given,
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A: Given: A 1800 kg car traveling at a speed of 90 km/h.
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A: Given data: Mass (m) = 1640 kgInitial velocity (v0) = 17.6 m/sFinal velocity (v) = 0 m/sDistance…
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A: Given data: Horizontal force (F) = 13 N Mass of cart (m) = 27 kg Initial velocity (v0) = 0 m/s Time…
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- A 747 jetliner lands and begins to slow to a stop as it moves along the runway. If its mass is 3.50×105 kg, its speed is 68.0 m/s, and the net braking force is 4.30×105N, what is its speed 11.0 s later? How far has it traveled in this time?A dockworker applies a constant horizontal force of 71.0N to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves a distance 10.5m in a time of 4.80s. What is the mass of the block of ice? If the worker stops pushing after 4.80s, how far does the block move in the next 5.40s?As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air at a speed of 22.0 m/s. In the process, he moves his hand through a distance of 1.60 m. If the ball has a mass of 0.150 kg, find the force he exerts on the ball to give it this upward speed.
- Two constant forces act on an object of mass m = 4.30 kg object moving in the xy plane as shown in the figure below. Force F, is 26.5 N at 35.0°, and force F, is 48.0 N at 150°. At time t = 0, the object is at the origin and has velocity (3.50î + 2.15j) m/s. 150° 35.0° (a) Express the two forces in unit-vector notation. F, - N (b) Find the total force exerted on the object. N (c) Find the object's acceleration. m/s2 Now, consider the instant t = 3.00 s. (d) Find the object's velocity. m/s (e) Find its position. (f) Find its kinetic energy from V½mv2. kJ (g) Find its kinetic energy from 2mv,2 + EF · AF. kJAn object has a velocity (4.04 m/s)i + (-4.96 m/s)j + (4.44 m/s)k. In a time of 3.84 s its velocity becomes (-3.75 m/s)i + (0.00 m/s)j + (4.44 m/s)k. If the mass of the object is 2.97 kg, what is the magnitude of the net force on the object, in N, during the 3.84 s? Assume the acceleration is constant.PROBLEM 5.9 10. A 430 N force accelerates a cart from 10 m/s to 18 m/s in 5 s. What is the mass of the cart?
- 9. A boy slides down a hill on a sled (total mass of 35 kg) and coasts onto a flat plain with a speed of 7.0 m/s. Friction between the sled and the snow exerts an average force of magnitude 30 N on the sled. How far (in m) does the sled travel before stopping? (Note: First, find the acceleration of the boy using Unit Two material, then use this to compute the distance using Unit One material.)A 1250 kg boat is traveling at 90 km/h when its engine is shut off. The magnitude of the frictional force fk between boat and water is proportional to the speed v of the boat. Thus, fk = 80v, where v is in meters per second and fk (the magnitude of the frictional force) is in newtons. Find the time required for the boat to slow down to 45 km/h.A 91 kg janitor wearing running shoes is running across an ice rink at a speed of 3.2 m/s. They try to stop abruptly, but keep sliding across the surface of the ice. The ice exerts a frictional force of 13.4 N to slow them down. How far do they travel before halting to a stop?
- As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air at a speed of 19.5 m/s. In the process, he moves his hand through a distance of 1.25 m. If the ball has a mass of 0.150 kg, find the force he exerts on the ball to give it this upward speed.A hockey puck with mass 0.166 kg is pushed across the ice with a constant force of 0.89 N. The coefficient of kinetic friction between the puck and the ice is 0.22. After a distance of 2.6 m, what is the puck's speed in m/s?A 1400-kg car is brought from 25 m/s to 10 m/s over a time period of 5.0 seconds. Determine the force experienced by the car.