Which of the following statements are true about measurements and units?
1 answer:
<span>A. In the SI system, unit prefixes are used to indicate powers of ten --> TRUE
The prefixes are used to indicate powers of ten: examples are kilo (k), which indicates </span>
, or mega (M), which indicates 
.<span>
B. The unit of length in the SI system is the meter --> TRUE
Lengths are measured in meters in the SI system.
C. Measurements must include both numbers and units --> TRUE
Every measurement must include the number and the unit. Example: for a length, we must write L=10.0 m, where 'm' refers to 'meters'.
D. The SI unit system is used only in Asia --> FALSE
The SI system is used in the whole world.</span>
The prefixes are used to indicate powers of ten: examples are kilo (k), which indicates </span>
B. The unit of length in the SI system is the meter --> TRUE
Lengths are measured in meters in the SI system.
C. Measurements must include both numbers and units --> TRUE
Every measurement must include the number and the unit. Example: for a length, we must write L=10.0 m, where 'm' refers to 'meters'.
D. The SI unit system is used only in Asia --> FALSE
The SI system is used in the whole world.</span>
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Answer:
Explanation:
Given
Object is thrown with a velocity of
Acceleration due to gravity is -g (i.e. acting downward)
Vertical distance traveled by object is given by
where v=final velocity
u=initial velocity
a=acceleration
s=displacement
at maximum height final velocity is zero
time taken to reach maximum height
using
v=u+at
0=9-gt