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Final Jeopardy Forces Pressure Motion Equations and Formulas 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 400 400 500 500 500 500 500 Misc. Forces for 100 In a game of tug-of-war, you pull on a rope with a force of 100 N to the right and your friend pulls on the rope with a force of 100 N to the left. What is the net force on the rope? 0 Newtons BACK Forces for 200 Something that starts, stops, slows down, or speeds up the motion of an object, and/or changes the direction of the object’s motion? Force BACK Forces for 300 A force of 25N is required to move a box. If you wanted to increase the speed without changing force, what could you do to the mass? Decrease mass BACK Forces for 400 If you want to make a surface less slippery, would you increase friction or decrease friction? Increase Friction. BACK Forces for 500 An object has a mass of 5.1kg and is falling with force of 50N. What is the objects acceleration? 9.8m/s/s BACK Pressure for 100 A student has two containers. Container A holds 1 liter of liquid. Container B holds two liters of liquid. Both containers are filled with same liquid. Are the densities of the two liquids equal or unequal? Equal BACK Pressure for 200 The density of a substance is 5 g/mL and its volume is 200mL. What is its mass? 1000g BACK BACK Pressure for 300 Which liquid in the container has the smallest density? Liquid A BACK BACK Pressure for 400 There two marbles of the same size, weight and density, yet one sinks in its container of liquid and the other floats in its container. Which of these describes the density of the different liquids? Container A Both marbles have the same weight, but they are in different types of liquid. Container B The liquid in container A has a greater density BACK BACK pressure for 500 What is the density of a block of wood that has a mass of 12g and has a length of 1cm, a width 2 cm and a height of 3 cm? 2g/cm³ BACK Motion for 100 Velocity is speed with___________. direction BACK Motion for 200 A car goes from 0m/s to 50m/s in 2 seconds. What is the car’s acceleration? a = fv-bv/t = 50m/s – 0m/s/ 2s = 25m/s/s BACK Motion 300 A passenger walks towards the rear of a moving train. What is her motion in relation to the ground if the train is moving faster than she is walking? Foward BACK Motion 400 What are the three types of acceleration? Speeding up, slowing down and changing direction. BACK Motion 500 Calculate Slope from 1-2 seconds, 2-3 seconds and from 5-6 seconds speed vs time 12 speed (m/s) 10 8 6 speed (m/s) 4 2 0 1 2 3 4 5 6 time (s) 1-2s = 2m/s; 2-3s = 3m/s, 5-6s = 2m/s BACK Equations and Formulas for 100 If a question on the final gives you the mass and the acceleration and asks for what the force is, what equation do you use? force=mass x acceleration BACK Equations and Formulas for 200 If a question on the final gives you the speed and the distance and asks for what the time is, what equation do you use? time= distance ÷ speed BACK Equations and Formulas for 300 If a question on the final gives you force and area and asks for pressure what equation do you use? Pressure=force÷area BACK Equations and Formulas 400 What are the units for Force N BACK Equations and Formulas 500 What are the units for acceleration? m/s/s BACK Miscellaneous for 100 Why is there less gravity on the moon? It is smaller than Earth BACK Miscellaneous for 200 What are the two factors that cause us to be in the Sun’s gravity field and not Pluto’s? Mass and Distance BACK Miscellaneous for 300 Weight on Earth is called what? gravity BACK Miscellaneous 400 The force of gravity depends on Mass and distance BACK Miscellaneous for 500 A person traveling in a car that stops suddenly keeps moving forward due to Inertia and BACK momentum Final Jeopardy • A ladybug is creeping down a sidewalk at 1 m/s. Sometime later, it’s speeding at 5 m/s. This could have happened if the lady bug accelerated at 1 m/s/s for 4 seconds. Is this the only way that the increase in speed could have happened? Explain. possibilities: 1 m/s/s for 4 s, 2 m/s/s for 2 s, 4 m/s/s for 1 s BACK Congratulations! Thank you for playing Jeopardy