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- help asapCivil and traffic engineers want to design a banked curve on a highway. The curve will have a 1.80 km radius and the highway's speed limit will be 70.0 mph. If every car will travel at the speed limit, what is this curve's ideal banking angle to three significant figures? NB: 1609 m = 1 mile. Hint: be careful with your units. 1.94° 2.62° 4.02° 3.18° 2.95° 15.5°A car with a constant speed of 95 km/h enters a circular flat curve with a radius of 0.5 km. The friction between the road and the car's tire can supply a centripetal acceleration of 1.35 m/s². What is the acceleration the car need to remain in this curve regardless of its acceleration of 1.35 m/s²? a) 2.39 m/s² b) 1.74 m/s² c) 1.35 m/s² d) 1.39 m/s² V₁ = V + at лd²h V= C=d F = ma ac r x=x+(+v₁)t +mgh+Fyud F r
- A 2000 kg car going at a steady speed of 18.0 m/s takes a curve with a 50.0 m radius. The road is level. 1. Draw an FBD. 2. Find the centripetal force of the car. 3. Find the frictional force of the car. 4. Find the weight of the car. 5. What is the minimum value that the coefficient of static friction between the tires and the road must have so that the car takes this curve without slipping?Which of the following statements are true. Select all correct answers a. The direction of centripetal acceleration is pointing towards the tangent direction of the circular trajectory b. The direction of centripetal acceleration is pointing towards the center of the circular trajectory c. The tangential velocity is always constant in a circular motion. d. The angular velocity is always constant in a circular motion.help with physics hw
- A soccer player kicks a ball, while imparting spin to bend it. The ball starts on the ground and is kicked with an initial velocity of 15 ?/?, at an angle of elevation 30 degrees. Assume the ball was kicked north and the spin creates a constant acceleration ? to the west, which is what makes the ball follow a curved path. If the ball lands 8 meters west of the starting point, what is the value of ?? Assume the standard value of ? = 9.8 ?/?2.A father fashions a swing for his children out of a long rope that he fastens to the limb of a tall tree. As one of the children swings from this rope that is 8.10 m long, his tangential speed at the bottom of the swing is 8.00 m/s. (a) What is the centripetal acceleration, in m/s2, of the child at the bottom of the swing? m/s2If a car takes a banked curve at less than the ideal speed, friction is needed to keep it from sliding toward the inside of the curve (a problem on icy mountain roads). a. Calculate the ideal speed to take a 100.0 m radius curve banked at 12°. Videal = m/s b. What is the minimum coefficient of friction needed for a frightened driver to take the same curve at 20.0 km/h? Hmin = Submit Question