A 64kg cyclist is riding in his 8.2kg moves in a circle of radius 14m. The road exerts a central force of 331N. What is the speed of the cyclist?
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- a 650kg roller coaster starts from rest at he top of a 76 meter tall hill. What is the speed of the coaster at the bottom of the hill?My 25-kilogram garbage cart has a broken wheel. I pull it to the curb with a force of 200N, while kinetic friction drags backwards with a force of 150N. Starting at rest, how fast is the cart moving after travelling two meters?A 74kg cyclist is riding in his 8.2kg moves in a circle of radius 8m. The road exerts a central force of 332N. What is the speed of the cyclist?
- You design a roller coaster with a 57 m starting hill. Not taking friction into account, what is the maximum speed of a roller coaster cart at the bottom of this hill?Sam is shooting a 10 kg rock using a catapult. The posts are 2 m apart and have an unstretched elastic band of the same length between them. The rock and band are pulled back by 1.5 m, which requires a force of 2000 N at the furthest point. How fast will the rock move when released?A 150 gg particle at x= 0 is moving at 8.00 m/s in the +xdirection. As it moves, it experiences a force given by Fx=(0.950N)sin(x/2.00m).What is the particle's speed when it reaches x = 3.14 m?
- A physics student ties a ball with a mass 0.30kg to a string which can exert a maximum force of 41 N without breaking. The student swings the ball in a circle with a radius of 0.91 m, slowly increasing the speed until the string breaks. The circle is oriented vertically so that the ball moves up and down while traveling in a circle. What is the speed of the ball as the string breaks?A rock is attached to an end of a 0.80 m rope. You whirl the 2.0 kg rock in a circle while holding m the other end of the rope. If it moves at a constant speed of 6.0 -, what is the work done on S the rock for every revolution it makes? O 90 J zero 72 J O 16 JA 56.32-kg skier with an initial speed of vi=44.29 m/s coasts up a H=15.4-m-high rise as shown in the figure. The slope angle is theta=20.41. What is her final speed at the top? Assume the coefficient of friction between her skis and the snow is 0.17 (Hint: Find the distance traveled up the incline assuming a straight-line path as shown in the figure.) Use g = 10 m/s2.