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 sled, of mass 18.6 kg, is stationary when it starts to slide down an icy hill.  The hill is 13.0 m tall.  Assuming friction is minimal, what is the speed of the sled at the bottom of the hill?  Give your answer in m/s to 1 decimal place.

A 108 kg man is skiing across level ground at a speed of 9.5 m/s when he comes to the small slope 1.2 m higher than ground level shown in the following figure. -8.0 m- f1.2 m (a) If the skier coasts up the hill, what is his speed (in m/s) when he reaches the top plateau? Assume friction between the snow and skis is negligible. 8.16 m/s (b) What is his speed (in m/s) when he reaches the upper level if a 75 N frictional force acts on the skis? 6.31 X m/s

A cylinder was dropped vertically from rest in a very high, evacuated tube near the surface of the earth. The mass of the cylinder is 6kg. What is its speed after the cylinder has fallen 4.0 m? 7 m/s В 11 m/s C) 2 m/s 9 m/s

A force in the +x-direction with magnitude F(x) = 18.0 N - (0.530 N/m)x is applied to a 6.00 kg box that is sitting on the horizontal, frictionless surface of a frozen lake. F(x) is the only horizontal force on the box. If the box is initially at rest at x = 0, what is its speed after it has traveled 14.0 m?

A skier weighing 0.85 kN goes over a frictionless circular hill as shown. If the skier's speed at point A is 8.8 m/s, what is his speed at the top of the hill (point B)?

I need help with this physics question #2

Please don't provide handwritten solution.....

The desperate contestants on a TV survival show are very hungry. The only food they can see is some fruit hanging on a branch high in a tree. Fortunately, they have a spring they can use to launch a rock. The spring constant is 1300 N/m, and they can compress the spring a maximum of 38 cm. All the rocks on the island seem to have a mass of 480 g. With what speed does the rock leave the spring?

When a m = 12 kg mass is on a frictionless incline of 30 degrees and takes 270 N to compress a spring 2.0 cm: The block briefly stops when the spring is compressed to 5.5 cm a) How far did it travel. I found the answer is 35 cm b) What is the speed of the 12 kg block as it touches the spring? How do I do part b? I got the spring constant k = 13500 and used 1/2 kx^2 to find how many joules it has at compressing the spring to 5.5 cm. When I set that equal to 1/2 mv^2 I did not get the right answer. How would I go about finding b?