Work and Calories Activity



Work and Calories Activity

Objective: To find out how much work you must do during certain activities to work off the food item/meal you have chosen.

Procedure:

1. Choose food items from the attached list that might constitute a typical snack or meal for yourself. Convert calories into Joules by multiplying the number of calories by 4,184 J. Write down everything.

2. The flight of stairs around the corner to the second floor is about 2.5 m (I measured it).

3. Use the work equation with the distance from the previous step to figure out how much work you do going up or down the stairs. Record the work done – remember to use your weight as the force in the equation). How many times would you have to go up or down these stairs to do enough work to work off the calories in your food items? (Assume there isn’t an angle here)

Questions: (Explain all answers and show all calculations)

1. What are your food items/meal? How many calories do they have (total)? How many Joules of energy do they provide?

2. For about how many hours would you need to swim to burn off the calories in your food item? (Look at the diagram at the right)

3. For about how many hours would you have to walk to work off the food item/meal? (Look at the diagram at the right)

4. Given a typical pushup does 333 J of work, how many pushups would you need to do to work off your food item/meal?

5. The stairs are actually at an angle of about 45 degrees. How would the amount of work done from Procedure 3. change? (Calculate the work using the work equation with an angle.) Are you doing more work or less work if we add the angle? Explain.

6. Use the answer from 5. to find out how many round trips at a 45 degree angle you must make to work off your food items/meal.

7. If you were doing step aerobics with steps 0.25 m high, how many steps would you need to take to work off your food items/meal?

8. Knowing how much energy is in your food items/meal and how much work you must do to counteract it, will you continue to eat your food items/meal? Will you consume more or less of it? Explain.

9. Why can calories be converted to joules?

10. Why do people exercise? Explain in terms of work and energy.

11. How is it possible to lose weight by following a diet and exercising? Explain in terms of work and exercise?

12. Why do people gain weight? Explain in terms of calories and work.

13. Would you say your food items provide adequate energy for daily tasks? Explain.

14. A 55-kg student consumes 750 calories of energy at lunch. During an average school day the same student ascends/descends a set of stairs 3 m high about 6 times. Does the amount of energy in the student’s lunch account for the amount of work done going up/down the stairs? Explain.

Calories in Various Foods

American Cheese, 1 Oz. 105 Calories Roasted Chicken, 1 Breast 140 Calories

Apples, 1 Apple 80 Calories Roasted Chicken, 1 Drumstick 75 Calories

Apple Pie, 1 Piece 405 Calories Sugar Cereal, 1 Oz. 155 Calories

Bagels, Plain 1 Bagel 200 Calories Pudding, Chocolate 5 Oz. 205 Calories

Bananas, 1 Banana 105 Calories White Rice, Cooked 1 Cup 225 Calories

Beef Roast, 3 Oz. 315 Calories Roast Beef Sandwich 345 Calories

Beef Steak, 3 Oz. 240 Calories Vanilla Shake, 10 Oz. 315 Calories

Butter, 1 Pat 35 Calories Spaghetti & Meatballs, 1 Cup 330 Calories

Carrots, 1 Raw Carrot 30 Calories Tacos, 1 Taco 195 Calories

Cheeseburger, Small 300 Calories Turkey, Roasted 2 Pieces 135 Calories

Cheeseburger, Large 525 Calories Tuna, Canned 3 Oz. 165 Calories

Cheesecake, 1 Piece 280 Calories Waffles, 1 Waffle 205 Calories

Chewy or Hard Candy, 1 Oz. 110 Calories Mixed Vegetables, 1 Cup 75 Calories

Chicken Soup 110 Calories Cake w/Frosting, 1 Slice 235 Calories

Chocolate Candy, 1 Oz. 155 Calories Yogurt, Lowfat 8 Oz. 125 Calories

Chocolate Chip Cookies, 1 Cookie 185 Calories Burrito w/Beans, Cheese, & Meat 474 Calories

Coffee, 1 6 Oz. Cup 0 Calories Biscuit w/Egg & Sausage 373 Calories

Cola, 1 12 Oz. Can 160 Calories Chicken Fillet Sandwich 303 Calories

Corn, Cooked 1 Oz. 135 Calories Ham and Cheese Sandwich 344 Calories

Corn Chips, 1 Oz. 155 Calories Salad, Vegetables & Chicken 352 Calories

Cottage Cheese, 1 Cup 235 Calories Steak Sandwich 584 Calories

Danish Pastry 235 Calories Sub Sandwich w/Cold Cuts 147 Calories

Diet Cola, 1 12 Oz. Can 0 Calories Hot Fudge Sundae 474 Calories

Doughnuts, 1 Plain Doughnut 210 Calories

Eggs, 1 Cooked Egg 100 Calories

Fish Sandwich w/cheese 425 Calories Note: Not all calories from food are

French Fries, 1 Container 380 Calories converted to usable energy .by the body.

French Toast, 1 Slice 155 Calories Also, work is not 100% usable or efficient

Fried Chicken, 1 Breast 365 Calories either, so our answers will be slightly

Fried Chicken, 1 Drumstick 195 Calories inflated. However, these are still good

Hamburger, Small 245 Calories approximations. Remember, not all

Hamburger, Large 445 Calories calories from food need to be burned off -

Hot Dogs, 1 Cooked Frank 145 Calories it’s only when you go over the daily

Ice Cream, 1 Cup 275 Calories recommendation of 2,000 – 2,500 calories

Jello, ½ Cup 70 Calories that it becomes important to try and burn

Juice, 1 Cup 155 Calories off excess calories. Your body needs

Macaroni and Cheese, 1 Cup 230 Calories 2,000 – 2,500 calories to perform its daily

Milk, 1 Cup 2% 120 Calories processes and actions (internal and chemical).

Mixed Nuts, 1 Cup 785 Calories

Oatmeal, 1 Cup 145 Calories

Oranges, 1 Raw Orange 60 Calories

Pancakes, 1 Plain Pancake 60 Calories

Pizza, 1 Cheese Slice 290 Calories

Plain Cereal, 1 Oz. 110 Calories

Popcorn, 1 Cup 55 Calories

Pork Chops, Cooked 3 Oz. 335 Calories

Potato Chips, 10 Chips 105 Calories

Pretzels, 10 Pretzel Sticks 10 Calories

................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download