A skateboarder starts at point A in (Figure 1) and rises to a height of 2.64 m above the top of the ramp at point B. For the steps and strategies involved in solving a similar problem, you may view the following Example 8-10 video: SOLUTION &+K-BIK *+-+ ity O 65m/ 10-40/ Part A What was the skateboarder's initial speed at point A? Express your answer in meters per second. V = Templates Symbols undo redo reset keyboard shortcuts help, Submit Request Answer m/s

A 2 kg toy car sits at the highest point of a 13 m high hill. The car is gently pushed forward until it begins to roll down the slope. Assuming the car coasts freely, without any friction or air resistance, how much kinetic energy (KE) and potential energy (PE) will it have at each of the indicated points? Complete the diagram by placing the correct label in each bin. Use g = 10 m/s? for the acceleration due to gravity. The diagram is not drawn to scale. Answer Bank 12 J 120 J 26 J 520 J 40 J PE = 260 J 140 J 220 J OJ 4 J KE = PE = KE = 13 m PE = KE = PE KE 6 m 2 m

In which of the following cases is work done?   what is the answer?    a) running around the oval   b) swimming across the pool   c) dragging a crate along the floor   d) carrying a basketful of fruits

Read the introduction to Tutorial 4 in the Tutorial Manual to help you answer the questions below. How do the base units of energy compare to the base units of work? Hint: use dimensional analysis using a fundamental principle such as the definition of work to determine units. same base units different base units Question 23 Imagine a system with a certain amount of kinetic energy. Which of the following systems would have a larger kinetic energy? Asystem with more mass but the same speed DA system with less mass but the same speed CLA system with the same mass but greater speed DA system with the same mass but smaller speed