Work done by a force of i kg m s2 which moves an object a distance of 1 m in a specified direction is termed as (a)a joule (b) 1 pascal (c) 1 watt (d)1 ohm 10. a car moves 3 times as fast as another identical car. compared to the slower car, the faster car has: (a) 3 times the k. e. (b) 6 times the k. e (e) 9 times the k. e.(d)27 times the k. e 11.a toy train rolls along a track with considerable momen- tum. if it rolls at the same speed but has twice as much mass, its momentum is b) dogbled v (a) zero (d) unchanged x (c) quadrupled 12. if you find that twice as much work is needed to perform a task but it takes twice as much time, the amount of power required is (b) four times as much (a) twice as much (d) unchanged (e) sixteen times as much 13.if an object is raised twice as high, its potential energy will be: (a) half as much (b) four times as much (d) unchanged (e) twice as much 14. a clerk lifts a 5 kg container a vertical distance of 1 m. how much is the potential energy stored in the container at the top? 5 x1-5 (b) 5jv (a) 0.5 j (e) 50 j (d) 500 j 15. a clerk rolls a 5 kg container up a 2 meter- long ramp to al meter elevation. how much is the potential energy stored in the container at the top of the ramp? (a) 0.5 j (b) 5 j (c) 50 j (d) 500 j 16. a clerk can lift containers a vertical distance of 1 meter or can roll them up a 2 meter long ramp to the same elevation. with the ramp, the applied force required is about: (a) half as much (b) four times as much (e) twice as much (d) the same
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Physics, 21.06.2019 23:40
Avalue that describes how heavy an object is and is related to the force of gravity is
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Physics, 22.06.2019 01:00
15. give an example for some particles or waves that are moving faster than light in everyday life 16. what is a laser? 17. what is an oscilloscope? 18. what does it means practically that nothing is faster than light in vacuum? 19. what is vacuum?
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Physics, 22.06.2019 10:30
Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.
Answers: 3
Physics, 22.06.2019 17:00
If you put a helium-filled balloon in the refrigerator, what will happen?
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Work done by a force of i kg m s2 which moves an object a distance of 1 m in a specified direction i...
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Social Studies, 18.07.2019 21:30
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