#5036 Daily Warm-Ups: Nonfiction Reading teacher Created Resources #5036 Daily Warm-Ups: Nonfiction Reading Warm-Up
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23 Tornadoes #5036 Daily Warm-Ups: Nonfiction Reading 64 ©Teacher Created Resources Warm-Up Check Your Understanding / 4 Name ______________________________________________ 1. The third law of motion states that for every action a. an object does something. c. there is an equal and opposite reaction. b. there is an opposite reaction. d. an object remains at rest. 2. A tennis ball bouncing off a garage floor best illustrates which law of motion? a. the first law of motion c. the third law of motion b. the second law of motion d. the fourth law of motion 3. A batter hitting a thrown ball best illustrates which law of motion? a. the first law of motion c. the third law of motion b. the second law of motion d. the first and second laws of motion 4. A golfer hitting a ball off a tee best illustrates which law of motion? a. the first law of motion c. the third law of motion b. the second law of motion d. the fourth law of motion The three important laws of motion were first clearly stated by the great scientist Isaac Newton. The first law of motion states that an object at rest will remain at rest until it is acted on by a force. It also says that an object in motion will remain in motion at the same speed and in the same direction until a force acts on the object. In simple terms, a baseball sitting on a shelf will remain unmoved until someone places it in play. A baseball moving through the air will be acted on by the friction of the air and soon fall to the ground. The second law of motion states that the speed of a moving object depends on how heavy the object being moved is and how hard it is being pushed or pulled by a force. The greater the force acting on an object, the more it will speed up. A powerful batter swinging a large, heavy bat will make a baseball move much faster than a small child with a plastic bat. The heavier an object is, the less the object will be moved by a force. Heavy rocks will not move as fast as a tennis ball when hit by the same force. The third law of motion states that for every action there is an equal and opposite reaction. This means that a rocket moves forward by the action of the hot gases pushing out from it. The reaction happens when the rocket lifts off. A bouncing ball also shows this third law of motion. Try these out for yourself at recess or at home. Scientifically Speaking Download 10.24 Kb. Do'stlaringiz bilan baham: |
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