(a) Indicate whether the claim is correct or incorrect and explain why. i. What type of energy does a compressed spring have? ii. When the cart is released the energy from part I is converted into what type of energy? iii. Write a conservation of mechanical energy equation for this scenario. iv. Use the equation in part iii to explain which cart will end up faster. v. Was the student correct?

If the calculated work of a system has a negative value, this can mean that work is done ___ the system.       a. is   b. on   c. by   d. at

17. Sketch this energy position graph. Label where the 5 spots (A to E) could be Energy vs Position Energy (J) Q 2500 1250 O -1250 -2500 Position (m) A. He is going his maximum speed B. He is stopped C. He is going his average speed D. He is going slow E. He is going fast PE KE

letter only no need for solution 1. What happens to the total energy of a moving object if there is NO external applied on it? a. It increases b. It decreases c. It remains constant d. increases then decreases2.A particle is thrown upward with some kinetic energy. What happened to its kinetic energy at the highest point or height it reaches? a. Its kinetic energy is lost b. It’s all kinetic energy is absorbed by the air c. Its kinetic energy is converted to potential energy d. Its kinetic energy is remain same3. A construction worker holds a heavy tool box at 1.5 meters high. How much work is done by the worker? a. Zero b. F x cos θ c. mgH d. ½ mv^2

I need answer within 20 minutes please please with my best wishes

7. The cart, in the diagram below, travels .80 m down the ramp with uniform acceleration in 1.5 seconds. The initial velocity(v.) is 0 m/s. You must show work. Determine the following. If answer requires a calculation, you must show work. The initial velocity(v.) is 0 m/s. a. Average Velocity b. Acceleration c. The dots in the strips below represent the position of the cart as it rolls down the .80- meter-long ramp. The time intervals between the dots are equal. Which of the strips best represents the motion of the cart down the ramp? Justify your choice. d. Which two strips represent an object moving at constant velocity? Justify your answer.

Help please

A spring with a spring constant of 366 N/m is compressed so it contains 18.7392 joules of elastic potential energy. A. How much is the spring compressed by? __________meters

Answer question 5 showing fully all the steps. Solution should be simplified and easy to understand as much as possible!

Exercise 3. Solve the following problem. 1. A 10-g bulet is fired and travels at a speed of 500 m/s. What is the bullet's kinetic energy? 2. Find the speed of a 300-kg body with a kinetic energy of 2 500 J.