Answer:In terms of an equation, the momentum of an object is equal to the mass of the object times the velocity of the object. where m is the mass and v is the velocity. The equation illustrates that momentum is directly proportional to an object's mass and directly proportional to the object's velocity.
Explanation:
Answer:
maximum kinetic energy is for Pulley
e) The pulley
Explanation:
Let 4 kg block is moving downwards with speed "v" so we can say that 2 kg block will move upwards with same speed "v"
Now we know that pulling is in pure rotational motion
so we will have


now kinetic energy of each is given as
For 4 kg block

for 2 kg block

For pulley



So maximum kinetic energy is for Pulley
I think it's 6/8, you multiply by 2. 3/4 x 2 = 6/8.