Copper, gold and silver are three of them.
Answer:
650 km/hr
Explanation:
Draw a right triangle from (0.0) (Point A) down 30 degrees and to the right for a length of 750 (Point B). Then draw a line from B up to the x axis to make a right angle (Point C). Use the cosine function to find line AC, the vector portion of AB that lies of the x (East) axis. Cosine(30)= Adjacent/Hypotenuse.
Cos(30) = AC/750
750*(cos(30)) = AC
AC = 649.5 km/hr
193080N
Explanation:
Given parameters:
Mass of the box = 10kg
Acceleration = 12miles per second
Unknown:
Force on the box = ?
Solution:
The force acting on the box is function of the mass and acceleration of the box.
Force = mass x acceleration
Now we need to convert the given acceleration to m/s
1000m = 1km
1.609km = 1miles
x
x 
= 19308m/s
Force on box = 10 x 19308 = 193080N
Learn more:
Force problems brainly.com/question/4033012
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Answer:
The bicycle slows down because of the frictional force acting on the tyres of the bicycle. When this frictional force overcomes the force applied by paddling, the bicycle stops.
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