Batman is fighting superman. He throws his 5 kg fist at superman with a speed of 9 m/s. Superman stops the punch with a force of
2 answers:
Answer:
It took seconds for batman's hand to stop moving.
Explanation:
Newton' s second law is defined as:
(1)
Where m is the mass and a is the acceleration.
But it is known that the acceleration is defined as follow by the kinematic equation that corresponds to a Uniformly Accelerated Rectilinear Motion.
(2)
Where is the final velocity and
is the initial velocity
The initial velocity of the fist will be zero () since it starts from a state of rest.
Then, equation 2 can be replaced in equation 1
(3)
Therefore, t can be isolated from equation 3
(4)
Hence, it took seconds for batman's hand to stop moving.
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Answer:
If the acceleration is constant, the movements equations are:
a(t) = A.
for the velocity we can integrate over time:
v(t) = A*t + v0
where v0 is a constant of integration (the initial velocity), for the distance traveled between t = 0 units and t = 10 units, we can solve the integral:
Where to obtain the actual distance you can replace the constant acceleration A and the initial velocity v0.