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3rd Quarter CRT Review - 1 8.08.19.09.110.0?? 25 20 15 10 5 25 20 15 10 5 25 20 15 10 5 25 20 15 10 5 25 20 15 10 5 25 20 15 10 5

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ASCOS #8.0 – 5 points Question According to Newton’s 2 nd law, if there is an increase in force, what will happen to the acceleration of the object?

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ASCOS #8.0– 10 points Question According to Newton’s first law of motion, what will a moving object that is not acted on by an unbalanced force do?

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ASCOS #8.0– 15 points Question According to Newton’s Laws, when the brakes are suddenly applied to a moving vehicle, what causes a person to continue to move forward in his seat?

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ASCOS #8.0– 20 points Question According to Newton’s third law of motion, when a force is exerted on an object what does a second force produce?

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ASCOS #8.0– 25 points Question If an astronaut uses a jet of nitrogen to maneuver in space, what law is illustrated as the nitrogen is expelled?

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ASCOS #8.1– 5 points Question A student kicks a 0.7 kg ball. She then kicks a 70 kg rock with the same force. What can be said about the acceleration of the ball as compared to the rock?

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ASCOS #8.1– 10 points Question All objects accelerate toward the Earth at a rate of 9.8 m/s/s. What is the effect on velocity for every second that an object falls downward?

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ASCOS #8.1– 15 points Question Due to projectile motion, where should Mr. Smith aim when shooting at a target?

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ASCOS #8.1– 20 points Question Given the formula (F=ma), how much force is needed to accelerate a 62 kg rider and her 300 kg motor scooter at 6 m/s/s.

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ASCOS #8.1– 25 points Question Given the formula, (acceleration = final velocity – starting velocity divided by time), what is a plane’s acceleration from Mobile to Saraland if the plane passes over Mobile with a velocity of 8,000 m/s north and then passes over Saraland at a velocity of 10,000 m/s north, 40s later?

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ASCOS #9.0– 5 points Question A construction worker is given four hammers of different lengths. Which hammer would have the greatest mechanical advantage?

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ASCOS #9.0– 10 points Question How would you describe the input force and distance of a screw?

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ASCOS #9.0– 15 points Question A student is given a 10 kg rock, four boards, and a fulcrum to make a lever. Which board will have the greatest mechanical advantage if the fulcrum is placed in the same place relative to the load?

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ASCOS #9.0– 20 points Question A student wants to lift a 20 kg box. She has four pulleys and a 18 m rope. Which arrangement would have the greatest mechanical advantage?

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ASCOS #9.0– 25 points Question To open a bottle, Mary applied a force of 90 N to the bottle opener. The bottle opener applies a force of 225 N to the bottle cap. What is the mechanical advantage of the bottle opener?

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ASCOS #9.1– 5 points Question A 546 g fish displaces 420 cm 3 of water. What is the density of the fish? (D=m/v)

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ASCOS #9.1– 10 points Question How do gases and air flow?

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ASCOS #9.1– 15 points Question Air is made up of gases, but it can be called a fluid. Why is an airplane able to fly within this fluid?

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ASCOS #9.1– 20 points Question An ice cube is dropped into a glass of water that is filled to the top. The ice cube causes some of the water to overflow. What is true of the weight of the displaced water?

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ASCOS #9.1– 25 points Question In what direction do gases exert pressure?

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ASCOS #10.0– 5 points Question A ball falls from a height of 6 meters in the absence of air resistance. When does the ball have the greatest kinetic energy and the least potential energy?

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ASCOS #10.0– 10 points Question A roller coaster travels up and down a large hill and then a small hill. At what point on the hills does the roller coaster have the greatest kinetic energy?

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ASCOS #10.0– 15 points Question A student is observing traffic and sees four vehicles: a large truck traveling 60 m/s, a large truck traveling 30 m/s, a small car traveling 40 m/s, and a small car traveling 25 m/s. Which vehicle has the MOST kinetic energy?

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ASCOS #10.0– 20 points Question A vehicle is traveling at 25 Km per hour. It increases its speed to 60 km per hour. What happens to its kinetic and potential energy?

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ASCOS #10.0– 25 points Question By increasing the speed of an object what happens to its potential energy?

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ASCOS #8.0– 5 points Question What does Newton’s second law of motion state about an object’s acceleration?

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ASCOS #8.1– 10 points Question Given the formula, (average speed = total distance divided by total time), what is the bird’s average speed if it flies 250 m for 25 s? (s=d/t)

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ASCOS #9.0– 15 points Question What is the term for a slanted surface used to raise an object?

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ASCOS #9.1– 20 points Question The reason you blow round bubbles and not square ones is explained by what principle?

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ASCOS #10.0– 25 points Question Two objects have the same mass. One object is traveling vertically 25 km/s. The other object is on the floor and is traveling horizontally at a speed of 25 km/s. Which one has the greatest kinetic energy and least potential energy?

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ASCOS #8.0 Topic Identify Newton’s Three Laws of Motion.

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ASCOS #8.1 Topic Identify and calculate the elements of motion.

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ASCOS #9.0 Topic Describe how mechanical advantages of simple machines reduce the amount of force needed for work.

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ASCOS #9.1 Topic Describe the effect of force on pressure in fluids.

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ASCOS #10.0 Topic Differentiate between kinetic and potential energy.

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ASCOS #?? Topic Hodge Podge – a mixture of questions from all objectives.

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ASCOS # 8.0 Answer The acceleration will increase.

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ASCOS # 8.0 Answer It will remain in motion.

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ASCOS # 8.0 Answer inertia

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ASCOS # 8.0 Answer A force equal in size and opposite in direction.

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ASCOS # 8.0 Answer Newton’s third law

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ASCOS # 8.1 Answer The ball will have a greater acceleration than the rock.

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ASCOS # 8.1 Answer It increases by 9.8 m/s until it reaches terminal velocity.

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ASCOS # 8.1 Answer Above the bull’s eye.

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ASCOS # 8.1 Answer 2172 N [F=ma = (62kg + 300kg)(6m/s/s) = (362 kg)(6m/s/s) = 2172 N]

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ASCOS # 8.1 Answer 50 m/s/s north [V f – V s /t = 10,000 m/s – 8,000 m/s ÷ 40s = 2,000 m/s ÷ 40s = 50 m/s/s.]

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ASCOS # 9.0 Answer The longest hammer.

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ASCOS # 9.0 Answer Small input force over a long distance.

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ASCOS # 9.0 Answer The longest board

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ASCOS # 9.0 Answer The rope with 4 pulleys

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ASCOS # 9.0 Answer 2.5 [Mechanical Advantage = Output force/Input force = 225 N/ 90N = 2.5]

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ASCOS # 9.1 Answer 1.3 g/cm 3 [D=m/v = 546 g/420 cm 3 = 1.3 g/cm 3 ]

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ASCOS # 9.1 Answer Always from areas of high pressure to low pressure

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ASCOS # 9.1 Answer Because of Bernoulli’s principle (difference in speed of air) and decrease of pressure which provides lift.

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ASCOS # 9.1 Answer It is the same as the weight of the ice cube

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ASCOS # 9.1 Answer Evenly in all directions.

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ASCOS # 10.0 Answer Just before it hits the ground.

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ASCOS # 10.0 Answer The bottom of the biggest hill.

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ASCOS # 10.0 Answer The large truck traveling at 60 m/s.

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ASCOS # 10.0 Answer Kinetic energy is increased and potential energy is not affected.

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ASCOS # 10.0 Answer It does not affect potential energy.

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ASCOS # 8.0 Answer It increases as its mass decreases and as the force acting on it increases.

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ASCOS # 8.1 Answer 10 m/s [s=d/t = 250m/25s = 10 m/s]

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ASCOS # 9.0 Answer Inclined plane

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ASCOS # 9.1 Answer Pascal’s principle

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ASCOS # 10.0 Answer They have the same kinetic energy but the one traveling horizontally on the floor has the least potential energy.

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