Physics, 18.08.2019 20:00 jenniferjennifer5327
Suppose you are walking home after school. the distance from school to your home is five kilometers. on
foot, you can get home in 25 minutes. however, if you rode a bicycle, you could get home in 10 minutes.
a. what is your average speed while walking?
b. what is your average speed while bicycling?
c. how much faster you travel on your bicycle?
Answers: 1
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Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.
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Agirl throws a ball. if the ball's acceleration is 12 m/sec/sec and its mass is 0.5 kg, how much force did the girl apply to the ball?
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Suppose you are walking home after school. the distance from school to your home is five kilometers....
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