An airplane of mass 4500 kg is cruising at a speed of 49.0 m/s at an altitude of 175 m. What is its total mechanical energy ?

A block of mass m is at the top of an inclined plane of length L and angle of inclination 0. The block slides without friction down the plane and reaches the bottom. Use conservation of energy to find the block's speed at the bottom of the plane. How would you solve this problem using a force approach? Do the problem that way and see if you get the same answer.

A roller coaster of mass 80.0 kg is moving with a speed of 12.0 m/s at position A as shown in the figure. The vertical height above ground level at position A is 10.0 m. Neglect friction. 10 m 7 m - Potential Energy 0 What is the total mechanical energy of the roller coaster at point A? 5760 J 2080 J 37000 J 7840 J Page 18 of 30 13600 J

A spring powered toy gun is used to fire a 0.2kg ball. The spring has a spring constant of 500N/m and is compressed a distance of 0.35m. How much energy is stored in the spring? 30.6 J O 35.0 J 25.4 J 20.1 J

A 98 kg bicyclist traveling 15 m/s coasts up a 5 m high incline. After reaching the top of the incline, their speed has been reduced to 2 m/s. How much thermal energy from friction was lost between the two points given? v = 2 m/s v = 15 m/s 5m

A 3.0 kg package is released and slides down a ramp, which is 10 m in length and is inclined at an angle of 30 degrees.  It experiences a frictional force of 5.0 N during the slide.  What is its final speed at the bottom of the ramp?  USE ENERGY METHODS.

A roller coaster starts with a speed of 5.7 m/s at a point 49 m above the bottom of a dip. Neglecting friction, what will be the speed of the roller coaster at the top of the next slope, which is 32 m above the bottom of the dip? Answer: m/s

10. A 0.58-kg ball is thrown vertically upward with an initial speed of 13.5 m/s. What is the potential energy of the ball when it has travelled three-quarters of the distance to its maximum height? (Use reference point of measurements of the heights) 50 ssr sf60 ss sf60 s 60 091S

A 2.4 kg mass starts from rest at point A and moves along the x axis subject to the potential energy shown in the figure below. PE 30 3 253 20 J 153 10 J 53 2m B E 6m 8m 10m (a) Determine the speed of the mass at points B, C, D. point B m/s point C m/s point D m/s X (b) Determine the turning points for the mass. (Select all that apply.) point A point B point C point D point E

please help.