An Olympic skier moving at 37 m/s down a 26° slope encounters a region of wet snow of coefficient of kinetic friction = 0.96. The acceleration of gravity is 9.8 m/s². How far down the slope does she travel before coming to a halt? Answer in units of m. Answer in units of m. Your response... i Previous Responses X #1.1361.1 PALETTE
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- A cyclist coasts up a 10.0 degree slope, traveling 20.0 m along the road to the top of the hill. If the cyclist’s ini- tial speed is 9.00 m/s, what is the final speed? Ignore friction and air resistance1. I ran a computer simulation of a ball bearing (steel sphere, about 5 mm in diameter) falling under the force of gravity through (1) water and (2) purified honey. The downward velocity of the ball bearing (normalized to unity; "AU" = arbitrary units) is plotted against time below. (a) Which curve is the simulation of the ball bearing falling through water? (b) Which curve is the simulation of the BB falling through honey? (c) Draw and label a curve that represents what the velocity-vs.-time profile might be if the BB were falling through air. (d) Draw and label a curve that represents what the velocity-vs.-time profile might be if the BB were falling through a perfect vacuum. Velocity (AU) 1 0.8 0.6 0.4 0.2 0 0 0.5 1 1.5 2 Time (s) 2.5 3 3.5 4P₁ A 30° 5 ft 300 lb Fig. P3.29 X 50 lb B P₂ *3.29 The bar AB, which is inclined at the angle to the horizontal, is subjected to the four forces shown. Knowing that these forces have no resultant (neither a force nor a couple), determine P₁, P2, and 0.
- Computation. A rocket, with a mass of 1.8 x 104 kg, blasts off from earth with a uniform upward acceleration of 2.78 m/s². Ignoring any air resistance, calculate the magnitude of the rocket engines' upward thrust, T T= N 2 Record your numerical answer below, assuming three significant figures.A 1500 kg car traveling 30 m/s comes to a stop. The coefficient of friction between the tires and the road is 0.80. What is the acceleration of the car? What is the stopping distance?A 10.0 kg mass is acted on by the two forces: and F1=(3.0N)i+(2.0N)j and F2=(10.0N)i+(7N.0)7 a) Express the summation of these two forces in unit vector notation. That is: b) What is the acceleration of this mass while these forces are acting? Write your answer in unit vector notation. c) What is the direction of the acceleration (give the angle of acceleration with the x axis)?
- Determine the force Q-> when the block moves with constant velocity. Express your answer in vector form.Section 1.6 30. a. With what initial speed must you throw a ball vertically for it to reach a height of 20 ft? The ball weighs 1 lb. How does your answer change if the ball weighs 2 lb? b. Suppose you want to throw a steel bar vertically to a height of 20 ft. The bar weighs 2 lb. How much initial speed must the bar have to reach this height? Discuss how the length of the bar affects your answer.pls answer in 3 decimals thank you
- You are playing a game and you push a cart to give it in. speed. The cart starts at the bottom (zero) of a ramp and after reaching the top of the ramp, the cart travels across a horizontal track w/ friction. The mass of the cart is 44 x 10^-3 kg. The ramp is 56 cm high. The length is 70 cm. What can you infer of the intial speed in (m/s)A 3.00-kg object is acted upon by an applied force causing it to move along a rough horizontal plane, with its x 5t² - 1 and y = 3t3 + 2, where x and y are in meters and t is in seconds. The and y coordinates given by x = coefficients of friction between the object and the surface are 0.4 and 0.8. Answer the following questions: a. What are the units of the numerical coefficients? b. Determine the acceleration of the object as a function of time. c. Determine the Net force acting on the object at t = 5s.Instructions Use g = 10 m/s2 Always answer in standard units (SI units). Unless otherwise instructed. Answer to 2 decimal places. Unless otherwise instructed. A) One way to determine the coefficients of friction (μs and μk) between two surfaces is to use an incline plane. Consider a block of mass m = 2.0kg initially at rest at the top of the ramp. The angle θ is increased slowly. The object starts to slide down the ramp when the angle is 40 degree. Determine the value of μs. B) From the above problem, the block slides down the slope with an incline angle of 40 degree, the angle is kept constant. The block starts from rest and travels along the ramp by distance d = 2.0 m in time t = 1.5 s. Determine the value of μk