Answer:
a)
b)
Explanation:
a)
= mass of the asteroid = 43000 kg
= initial speed of asteroid = 7600 m/s
= final speed of asteroid = 5000 m/s
= Work done by the force on asteroid
Using work-change in kinetic energy theorem
b)
= magnitude of force on asteroid
= distance traveled by asteroid while it slows down = 1.4 x 10⁶ m
Work done by the force on the asteroid to slow it down is given as
The conversion factor needed to change from kilometers to meters is
D) 1000
Explanation:
The meter (m) is the SI units to measure distance.
The kilometer (km) is a sub-unit, where the prefix 'kilo' stands for 
, or 1000. This means that:
Therefore, if we have a length expressed in kilometers, we just need to multiply by 1000 to get the corresponding length in meters.
For instance, if we have a length of
L = 3.47 km
To convert in meters, we do:
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In scientific notation", that number would be written as
6.81 x 10⁻⁴ .
Answer:
The answer is 0.12.
Explanation:
The least number of significant digits in the problem determines the number of significant digits in the answer in any multiplicantion/division problem. So for 15.0/124 there would be 2 significant digits in the answer since 15.0 has the least number of sig digs.
