Which has the greater change in momentum, a 50 gram clay ball that strikes a wall at 1 m/s and sticks or a 50 gram superball tha
1 answer:
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Answer:
a
b
Explanation:
From the question we are told that
The distance travel in 4.22 s is
The mass of the cart plus the fan is
Generally from kinematic equation we have that
Here u is the initial velocity with value
So
=>
Generally the net force is
=>
=>
Gnerally the new mass of the cart plus the fan is
The distance considered is
Generally the new acceleration of the cart is mathematically represented as
=>
=>
=>
Gnerally from kinematic equation we have
Here u is the initial velocity and the value is zero because it started from rest
=>
=>
Answer:
The speed of electron is
Explanation:
Given that,
Electric field
Distance = -0.0200
The electron's speed has fallen by half when it reaches x = 0.190 m.
Potential energy
Change in potential energy as it goes x = 0.190 m to x = -0.210 m
We need to calculate the work done by the electric field
Using formula of work done
Put the value into the formula
We need to calculate the initial velocity
Using change in kinetic energy,
Now, using work energy theorem
So,
Put the value in the equation
Put the value of m
We need to calculate the change in potential energy
Using given potential energy
We need to calculate the speed of electron
Using change in energy
Put the value into the formula
Hence, The speed of electron is