Answer:
Chemical you bodily functions while you are jumping
Sound you feet hitting the ground and the jump rope smacking the ground
Mechanical is you jumping up and down and the jump rope spinning a constant direction
Explanation:
Answer:
192000 J or 192 kJ
Explanation:
Work done = Force × distance moved along the direction of force.
From the question,
W = F×d............... Equation 1
Where W = work done by the car, F = Force of the car, d = distance move by the car along the direction of the force.
We can calculate for d using the equation of motion
d = (v+u)t/2..................... Equation 2
Where v = Final velocity of the car, u = Initial velocity of the car, t = time.
Given: u = 12 m/s, v = 0 m/s(skids to a stop), t = 4.0 s
Substitute into equation 2
d = (12+0)4/2
d = 24 m.
Also given: F = 8000 N
Substitute into equation 1
W = 8000×24
W = 192000 J
W = 192 kJ.
1) An electron is moving east in a uniform electric field of 1.53N/C directed to the west. At point A, the velocity of the electron is 4.51�105m/s pointed toward the east. What is the speed of the electron when it reaches point B, which is a distance of 0.400m east of point A? 2) A proton is moving in the uniform electric field of part A. At point A, the velocity
Answer:
The value is 
Explanation:
From the question we are told that
The mass of the first car is 
the initial speed of the car is 
The mass of the second car is 
The distance move by both cars is s = 1.93 m
Generally from the law of momentum conservation
Here 
because the second car is at rest
and 
is the final velocity of the the two car
So
=> 
Generally from kinematic equation
here a is the deceleration
So
=> 
Generally the frictional force is equal to the force propelling the car , this can be mathematically represented as
Here F is mathematically represented as
and
So
=>
=>
Answer:
10 seconds
The explanation is in the picture
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