a simple machine that combines two inclined planes and is used to split objects is called a . group of answer choices
1 answer:
Answer:
The answer is a wedge.
Explanation:
The wedge is a combination of two inclined planes. It is used to separate bodies which are held together by large forces, e.g, splitting timber
M.A.= slant height of wedge/thickness of wedge.
Hence a long thin wedge has a higher mechanical advantage than a short thick one; or the smaller the angle theta between the slant heights, the greater the mechanical advantage.
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Answer:
The time required by the impulse to travel from foot to brain equals 0.019 seconds
Explanation:
For uniform motion the distance, speed, time are related by the equation
In our case since the person is 1.90 meters tall so the nerve impulse will have to cover a distance of 1.90 meters at a speed of 100 m/s.
Hence the time required for the impulse to travel from foot to the brain can be calculated as
Answer:
a)
b)
c)
d)
Explanation:
Given:
mass of the player,
mass of the ball,
initial velocity of the player,
initial velocity of the ball,
a)
<u>Case:</u> When the player and the ball are moving in the same direction.
where:
total mass after the player catches the ball
v = final velocity of the system
b)
Initial kinetic energy of the system:
Final kinetic energy of the system:
∴Change in kinetic energy
c)
<u>Case:</u> When the player and the ball are moving in the opposite direction.
d)
Final kinetic energy in this case:
∴Change in kinetic energy: