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Help with physical science hw? ten points!?
how do you combine displacement?
if bob walks 2 blocks east, 4 blocks south and 2 blocks west what is his displacement?
a. 2 blocks south
b. 4 blocks south
c. 2 blocks south, 2 blocks east
d. 4 blocks south, 2 blocks east
alex rode his motor 600 meter sin 15 seconds, how fast did he go?
jessica ran speed 5/5 ms for a total of 120 seconds. how far did she go?
which state is true about an object in free fall?
a. object has a constant velocity
b. has a constant acceleration
c. acceleration of object increases as it falls
d. velocity decreases as acceleration decreases as it falls
thank u!!!
3 Answers
- 8 years agoFavorite Answer
2 right, 4 down, 2 left. Left and right cancel out.
b. four blocks south
speed = distance/time
speed = 600/15
speed = 40m/s
distance = speed x time
distance = 5.5 x 120
distance = 660m
depends. most probably b. has a constant acceleration, but only upto a certain point when the object begins to have large drag forces, causing the acceleration to decrease, as the object nears terminal velocity.
- 8 years ago
1) B
2) 40 Meters PS, or .025 MPH
3)660 Meters if the number you meant to write is 5.5 instead of 5/5, if it is 5/5 then its a total of 120.
4)A, because the rate of free fall on Earth is fixed at 9.8 m/s/s.
Objects cannot B,C, or D in free fall since free fall only occurs without wind resistance.
- Anonymous4 years ago
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