A boy is playing flying fox over a swimming pool as illustrated in the figure. A cable mounted on the top of a tall tower runs down to the ground with an angle 026° with respect to the horizontal. The boy at the top of the tower grabs a pulley on the cable and slides down from rest. His initial height was ho 15 m above the water. When he reaches h, 10 m above the water, he releases his hands from the pulley and falls into the water. The boy is subject to the regular force of gravity (9.80665 m/s2). Ignore friction and air resistance. (a) Determine the speed of the boy at the moment he releases his hands from the pulley. Answer: 9.90 m/s (b) Determine the speed of the boy at the moment he splashes into the water. Answer: 17 (c) At what angle with respect to the horizontal does the boy enter the water? Answer: 57.85 degrees

You have put a sonar device at the top of a frictionless inclined plane. That device allows you to measure the distance an object is from the device, as well as the speed and the acceleration of that object. If we decide that the origin (h = 0) is at the sonar device, we want to know what the height change is as we slide down the incline. For an angle below the horizontal of 9.74°, we see that our object has slid a distance 0.54 m, as measured along the incline itself. - Calculate the height change and report your answer as a negative number. (This value would be useful for calculating the change in gravitational potential energy, as we will do in the lab.) h=o e

A child's swing is held up by two massless ropes tied to a tree branch. The distance between the ropes at the top of the swing is less than the distance between the ropes at the bottom, so that the ropes hang 14.01° from the vertical (see the picture). If the tension in each rope is 2.4 N, what is the weight of the swing?

A drag chute must be designed to reduce the speed of a 1171 kg dragster from 342 km/hr to 80 km/hr in 4 seconds. Assume that the drag force is proportional to the velocity (kv). a) What value of the drag coefficient k is needed to accomplish this? kg · s? (Leave an exact answer.) m2 k = b) How far (in meters) will the dragster travel in the 4-sec interval? d = meters. (Round to the nearest meter) Question Help: O Message instructor Submit Question

An elevator has a mass of 200kg. An average person has of 40 kg. The elevator must accelerate upward at 3 m/s^2. If the elevator cable is capable of supporting 6500 N of tension before it breaks. What is the maximum number of people you could have on board?

A little youngster pulls a toy block up a steep hill before releasing it at the top. He believes the block will fall in his room, but his sister believes he is attempting to fire it into her room across the corridor. Mom isn't going to be pleased if she goes down the hall and steps on the block. Assume the incline's upper end is 1.00 m (horizontally) from the boy's door, and the hallway is 1.00 m wide. Who is correct? This issue, as a whole, does not fit any of the problem types you've learnt; nevertheless, it may be divided into three individual problems. The steps below will walk you through them. There is just one evaluation required. (a) A kid pulls a 0.750 kg wooden block up an incline with an 8.43 N force that is parallel to the slope (rather than horizontal, which is more difficult). The inclination is at an angle, and the kinetic friction coefficient between the block and the incline is 0.178. Determine the acceleration of a block with a 28.0° angle and a length of 0.463 m. (c)…

A Box is placed on a 40° slope with a coefficient of friction of 0.30. The box starts approximately at 6.0m off the ground. It slides onto a horizontal part with a coefficient of 0.45. How far does it slide along this part?

The figure shows two vectors, A and B, whose magnitudes are A = 6.8 and B = 5.5.

An astronaut wearing a space suit floats in the middle of a room with no air and is 20.0m from any wall, the floor and the ceiling. She needs to get to the door. She has only a book and a pencil in her possession. Under these conditions, how can she get to the door?

Problem 8: A person is standing on top of a building. While standing at the edge of the building the person throws a water balloon downward with a speed of 24 m/s and at an angle of 36° below the horizontal. It takes 3.1 s for the water balloon to hit the person's friend. Part (a) How high is the building in meters? Numeric : A numeric value is expected and not an expression. h = Part (b) How fast is the water balloon moving when it hits the friend on the ground? Give your answer in m/s. Numeric : A numeric value is expected and not an expression. v= Part (c) What was the horizontal distance between the friend on the ground and the building in meters? Numeric : A numeric value is expected and not an expression. dx = %3!