Momentum of an object = (its mass) x (its speed) .
Since speed is a factor of momentum, an object that
isn't moving doesn't have any.
-- The moving player has momentum.
-- The stationary one doesn't.
The radio frequencies push one air molecule that then bumps into a different air molecule.....which then hits another and another causing a line of crashing molecules that lead inside your ear and hits your ear drum causing it to vibrate which causes the sounds.
Answer:
According to the law of conservation of momentum:
Momentum of the car and insect system before collision = Momentum of the car and insect
system after collision
Hence, the change in momentum of the car and insect system is zero.
The insect gets stuck on the windscreen. This means that the direction of the insect is
reversed. As a result, the velocity of the insect changes to a great amount. On the other hand,
the car continues moving with a constant velocity. Hence, Kiran’s suggestion that the insect
suffers a greater change in momentum as compared to the car is correct. The momentum of
the insect after collision becomes very high because the car is moving at a high speed.
Therefore, the momentum gained by the insect is equal to the momentum lost by the car.
Akhtar made a correct conclusion because the mass of the car is very large as compared to
the mass of the insect.
Rahul gave a correct explanation as both the car and the insect experienced equal forces
caused by the Newton’s action-reaction law. But, he made an incorrect statement as the
system suffers a change in momentum because the momentum before the collision is equal to
the momentum after the collision.
42) The sailboat travels east with velocity

, while the current moves south with speed

. Since the two velocities are perpendicular to each other, he resultant velocity will be given by the Pytagorean theorem:

and the direction is in between the two original directions, therefore south-east. So, the correct answer is
D) 42 mph southeast
43) Since the light moves by uniform motion, we can calculate the distance corresponding to one light year by using the basic relationship between velocity, space and time. In fact, we know the velocity:

and the time is one year, corresponding to:

therefore, the distance corresponding to one light year is:

Therefore, the correct answer is D.
44) For the purpose of the problem, we can assume that the light travels instantaneously from the flash to us (because the distances involved are very small), so the time between the flash and the thunder corresponds to the time it took for the sound to travel to us.
The speed of sound is

And since the time between the flash and the thunder is t=3 s, the distance is

Therefore, the correct answer is A) 3/5 mile.
Yes, many professional athletes will take dance classes to improve their skills. Such as football players to improve their footwork and use other muscles they wouldn't use while doing just push ups.