Name: Date: Class: 5.A snail can move approximately 0.30 meters per minute. How many meters can the snail cover in 15 minutes?
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1 Name: Date: Class: Average speed = 1.What is the average speed of a car that traveled miles in 5.5 hours? total distance total time s = d t 2.How much time would it take for the sound of thunder to travel 1,500 meters if sound travels at a speed of 330 m/sec? 3.How much time would it take for an airplane to reach its destination if it traveled at an average speed of 790 kilometers/hour for a distance of 4,700 kilometers? 4.How far can a person run in 15 minutes if he or she runs at an average speed of 16 km/hr? (HINT: Remember to convert minutes to hours.) 5.A snail can move approximately 0.30 meters per minute. How many meters can the snail cover in 15 minutes? 6.Calculate the average speed (in km/h) of a car stuck in traffic that drives 12 kilometers in 2 hours. 7.How long would it take you to swim across a lake that is 900 meters across if you swim at 1.5 m/sec? 8.How far will a you travel if you run for 10 minutes at 2 m/sec? 9.Suppose you ride your bicycle to the library traveling at 0.5 km/min. It takes you 25 minutes to get to 1.3 the library. How far did you travel? 10.You ride your bike for a distance of 30 km. You travel at a speed of 0.75 km/ minute. How many minutes does this take? 11.A train travels 225 kilometers in 2.5 hours. What is the train s average speed?. 12.An airplane travels 3,260 kilometers in 4 hours. What is the airplane s average speed?. 13.A person in a kayak paddles down river at an average speed of 10 km/h. After 3.25 hours, how far has she traveled?. 14.An airplane travels from St. Louis to Portland, Oregon in 4.33 hours. If the distance traveled is 2,742 kilometers, what is the airplane s average speed?
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3 Density = mass volume 1. A platinum bar measures 5.0 cm long, 4.0 cm wide, and 1.5 cm thick. It has a mass of grams. Calculate the volume of the platinum bar. D = m V Calculate the density of the platinum bar. 2. A lead cylinder has a mass of 540 grams and a density of 2.70 g/ml. Calculate the volume of the lead cylinder. 3. A cork has a mass of 3 grams and a volume of 16 cm 3. Calculate the density. 4. A thin glass bottle holds 25 ml of liquid and has a mass of 19 grams. Calculate the density. 5. A bar of soap is 12 cm tall, 6 cm wide, and 10 cm long. It has a mass of 415 grams. What is the density of the bar of soap. 6. A sheet of metal is 2 mm wide, 10 cm tall and 15 cm long. It was 4 grams. What is the density? 7. A pencil has a density of.875 g/ml. It has a mass of 3.5 grams. What is the volume? 8. Find the mass of a 50.0 ml quantity of water if the density of water is 1.00 g/ml. 9. If the density of 45.0 cm 3 block of wood is 0.65 g/ml calculate the wood s mass.
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5 Net force = mass acceleration F = ma 1. A car with a mass of 1500 kg accelerates when the traffic light turns green. If the net force on the car is 4000 Newtons, what is the car s acceleration? 2. A boy pushes forward a cart of groceries with a total mass of 40.0 kg. What is the acceleration of the cart if the net force on the cart is 60.0 N? 3. What is the upward acceleration of a helicopter with a mass of 5000 kg if a force of 10,000 N acts on it in an upward direction? 4. An automobile with a mass of 1200 kg accelerates at a rate of 3 m/sec2 in the forward direction. What is the net force acting on the automobile? 5. A 25-N force accelerates a boy in a wheelchair at 0.5 m/s2. What is the mass of the boy and the wheelchair (combined together)? 6. A 20-N force acts on an object with a mass of 2.0 kg. What is the objects acceleration? 7. A box has a mass of 150 kg. If a net force of 3000 N acts on the box, what is the boxes acceleration? 8. What is the acceleration of a 1000 kg car subject to a 500 N net force? 9. What force is necessary to accelerate a 1250 kg car at a rate of 40 m/s2? 10. What is the mass of an object if a force of 34 N produces an acceleration of 4 m/s2? 11. A baseball accelerates downward at 9.8 m/s2. If the gravitational force is the only force acting upon the ball and is 1.4 N, what is the baseball s mass?
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9 Work = force distance W = Fd 1. Amy uses 20N of force to push a lawn mower 10 meters. How much work does she do? 2. How much work does an elephant do while moving a circus wagon 20 meters with a pulling force of 200N? 3. A 900N mountain climber scales a 100m cliff. How much work is done by the mountain climber? 4. Shawn uses 45N of force to stop the cart 1 meter from running his foot over. How much work does he do? 5. How much work is done when a force of 33N pulls a wagon 13 meters? 6. How much work is required to pull a sled 5 meters if you use 60N of force? 7. Tommy does 15 Joules of work to push the pencil over 1 meter. How much force did he use? 8. Angela uses a force of 25 Newtons to lift her grocery bag while doing 50 Joules of work. How far did she lift the grocery bags? 9. The baseball player does 1234 Joules of work when hitting a baseball into left field. Assuming the baseball landed 100 meters away from home plate, how much force did the player use to hit the ball? 10. A box is pushed 40 meters by a mover. The amount of work done was 2,240 joules. How much force was exerted on the box? 11. A force of 100 newtons was necessary to lift a tree. A total of 150 joules of work was done. How far was the tree lifted?
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