Answer:
Explanation:
We need to apply conservation of momentum and energy to solve this problem.
<u>Conservation of momentum</u>
(1)
- m(c) is the mass of stick clay
- m(w) is the mass of the wooden block
- v(ic) is the initial velocity of clay
- V is the final velocity of the system clay plus wood.
<u>Conservation of total energy</u>
The change in kinetic energy is equal to the change in internal energy, in our case it would be the energy loss due to the friction force. Let's recall the definition of work, it is the dot product between force and displacement, Therefore:
We can find V from this equation:
Now, let's put V into the equation (1) and find v(ic)
I hope it helps you!
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A falling raindrop
Kinetic energy and potential energy are both applied when a body or object is falling.
Ball is thrown at an angle of 20 degree with velocity 18 m/s
so first we will find the two components of the velocity
similarly for other component
now the ball will cover horizontal distance of 30 m till it reach to other player
so here we can use the formula of time
so it will take 1.77 s to reach the other player
Initial angular velocity wi = 0
final angular velocity wf = 2.9 x 10⁴ rev/min
wf = 2.9 x 10⁴ (2*3.14 rad)/(60 sec)
wf = 3.035 x 10³ rad/sec
time t = 3 sec
angular acceleration α
wf = wi + αt
3.035 x 10³ = 0 + α(3)
α = 1012 rad/s²
(b) angle covered is θ
θ = wi*t + (1/2)αt²
θ = 0*3 + (1/2)(1012)(3²)
θ = 4554 rad
Please explain, so you have a picture of the question?
