Answer:
(a) Final speed of block = 3.2896 m/s
(b) 6.7350 m/s is the speed of the bullet-block center of mass?
Explanation:
Given that:
Mass of bullet (m₁) = 6.20 g
Initial Speed of bullet (u₁) = 929 m/s
Final speed of bullet (v₁) = 478 m/s
Mass of wooden block (m₂) = 850g
Initial speed of block initial (u₂) = 0 m/s
Final speed of block (v₂) = ?
<u>By the law of conservation of momentum as:</u>
<u>m₁×u₁ + m₂×u₂ = m₁×v₁ + m₂×v₂</u>
6.20×929 + 850×0 = 6.20×478 + 850×v₂
Solving for v₂, we get:
<u>v₂ = 3.2896 m/s</u>
Let the V be the speed of the bullet-block center of mass. So,
V = [m₁* u₁]/[m₁ + m₂] (p before collision = p after collision)
= [6.2 *929]/[5.2+850]
<u>V = 6.7350 m/s
</u>
Radio wave is the longest wavelength
Answer:
Calculate the acceleration if it took 2 seconds to slow your car down.Explanation:
Answer:
Wheel A
Explanation:
Moment of inertia is the tendency of a body to resist angular acceleration.
The moment of inertia of a body having its mass concentrated away from the axis of rotation will have a higher value.
<u>For a ring, we have the moment of inertia as:</u>
where:
m = mass of the ring
r = radius of the ring
<u>Moment of inertia for a disc:</u>
Answer:
<h2>0.17 m/s²</h2>
Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
f is the force
m is the mass
From the question we have
We have the final answer as
<h3>0.17 m/s²</h3>
Hope this helps you