0.50 kg - V% = 1.5 m/s r=0.95 m 2.0 m 1.9 m A toy roller coaster is shown above. Ignore friction except where indicated. (c) Calculate the normal force on the cart at point A.
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- A 40.2 box initially at 4.19m/s on a rough surface is brought to rest by an 18.7N force due to friction what distance does the box slide use there significant figuresThe spring shown in the figure below is compressed 80 cm to launch a 100 kg student. The track is frictionless until it starts up the incline. The coefficient of kinetic friction between the student and the track on the 30⁰ incline is 0.25. How far up the incline can the student go? k= = 15 m 90,000 N/m m = 100 kg 30°How fast would you need to fire a 80 g Hot Wheels car down a straight track in order for it to successfully coast through a circular vertical loop of track with a radius of 30 cm? Draw a diagram and construct a force balance to determine your answer?
- A 10 kg object is released at the top of a building 100 m high, If the force of air resistance is on the object is 30 N. Its speed just before strikes the grouna ts 100m O 55 m/s O 50 m's O 37.42 m/s O 30 m/sCh.5 Problem 72QUESTION 7 From the diagram below, what is the speed of the block when it reaches point A at the lowest point on the surface? 2.00-kg block with an initial velocity of 5.00 m/s down the track Frictionless track В 9.00 m 5.00 m A a. 11.2 m/s b. 9.70 m/s C. 14.2 m/s d. 15.7 m/s е. 12.7 m/s
- A 20 degree incline is shown with a 18 Kg block that is given an initial velocity 4 m/s down the incline. If the coefficient of kinetic friction is 0.5 calculate the acceleration of the block. 18 Kg 3.35 1.25 7.96 up the incline 7.96 down the incline 1.25 up the incline down the incline down the incline 4 m/s 20On the roller-coaster shown, a car is moving 10 m/s toward the right at point 1. Assuming no friction, calculate the speed of the car at point 4. 3 40 m 26 m 15 m 29.37 m/s 22.71 m/s 20.89 m/s 26.17 m/s A. D. В. 25.07 m/s Е. С. 24.29 m/s F.1a) A race car goes around a level, circular track with a diameter of 1.00 km at a constant speed of 80 km/h. What is the car's centripetal acceleration in m/s2?=_________ m/s2 1b) How much work is required to lift a 3.13 kg object from the bottom of a well 8.7 m deep?=__________ Joules 1c) A sound wave has a frequency of 1998 Hz. What is the distance between crests or compressions of the wave? (Take the speed of sound to be 344 m/s.)=________ m
- Current Attempt in Progress A block is projected up a frictionless inclined plane with initial speed vo= 3.16 m/s. The angle of incline is 0 = 35.0°. (a) How far up the plane does it go? (b) How long does it take to get there? (c) What is its speed when it gets back to the bottom? (a) Number i (b) Number i (c) Number i Units Units Units8only typing....13