Answer:
Vx = 15V
Explanation:
To find the speed of the third car you take into account that the distance that they travel is the same. Only time is different in one second. Mathematically you have:
you equal the first and second equation obtain the time t:
then, you can equal the third and first equation:
hence, Vx = 15V
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TRANSLATION:
Para encontrar la velocidad del tercer automóvil, tenga en cuenta que la distancia que recorren es la misma. Solo el tiempo es diferente en un segundo. Matemáticamente tienes:
iguala la primera y segunda ecuación obtiene el tiempo t:
entonces, puedes igualar la tercera y primera ecuación:
por lo tanto, Vx = 15V
Answer:
the mechanical advantage is 10
Explanation:
The computation of the mechanical advantage is as follows:
Mechanical advantage is
= Load ÷ Effort
where,
The Loan is equivalent to the weight i.e. 500 lb
And, the effort is equivalent to the force applied i.e. 50lb
So, the mechanical advantage is
= 500 ÷ 50
= 10
Hence, the mechanical advantage is 10
Answer:
His average speed is 0.15 kilometer per minute or 2.5 meters per second.
Explanation:
average speed = distance/time
x = 3 km/20 minutes
x = 0.15
—
x = 3000 m/1200 s
x = 2.5
Answer:
These energy exchanges are not changes in kinetic energy. They are changes in bonding energy between the molecules. If heat is coming into a substance during a phase change, then this energy is used to break the bonds between the molecules of the substance.
