Answer:
A motorcycle changing speed from 20km/h to 35km/h
Explanation:
it doesn't show unbalanced force acting on the object but instead, the motorcycle changing speed from 20km/h to 35km/h
Answer:
a) -23583J
b) 471.66N
Explanation:
Using the conservation energy theorem:
The height is given by:
substituting the values we have:
*
the work is defined by:
the force of the friction force is 180 degrees because it's opposite to the movement, so:
Short answer: v = 10 m/s
Comment
This is just an application of KE = 1/2 m v^2
Givens
KE = 100 Joules
m = 2 kg
v = ???
Formula
KE = 1/2 m v^2
Substitution and Solve
100 = 1/2 * 2 * v^2
100 = v^2 Take the square root of both sides.
sqrt(100) = sqrt(v^2)
v = 10 m/s
Comment
There is no KE unless v > 0.
You may have PE when v = 0, but not KE.
Answer:28
Explanation: I think so because ive done this
The conclusions that can be drawn about how objects can exert forces on each other even when they are not in contact is due to Earth's gravitational force as proposed by Newton.
<h3>What is a non contact force?</h3>
A non contact force is a type that occurs when two objects that are not in contact exerts force on each other.
This type of force is possible because of gravitational force of Earth.
Thus, the conclusions that can be drawn about how objects can exert forces on each other even when they are not in contact is due to Earth's gravitational force as proposed by Newton.
Learn more about universal gravitation law here: brainly.com/question/9373839
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