22) A golf ball moving forward with 1 unit of momentum strikes and bounces backward off a heavy bowling ball that is initially at rest and free to move. The bowling ball is set in motion
with a momentum of
A) less than 1 unit.
B) more than 1 unit.
C) 1 unit.
D) not enough information
23) A 1-kg glider and a 2-kg glider
To answer question 22, we need to consider the law of conservation of momentum. According to this law, the total momentum of a system remains constant unless acted upon by an external force.
In this scenario, we have a golf ball with 1 unit of momentum moving forward and a heavy bowling ball initially at rest. When the golf ball strikes the bowling ball, it exerts an external force on the bowling ball.
According to the law of conservation of momentum, the total momentum before the collision is equal to the total momentum after the collision. Since the bowling ball was initially at rest, its initial momentum is zero. Therefore, the total momentum before the collision is 1 unit.
After the collision, the golf ball bounces backward with some momentum and the bowling ball is set in motion. We can solve this question by applying the principle of conservation of momentum.
Let's assume the momentum of the golf ball after the collision is x units. Since the bowling ball was initially at rest and becomes set in motion, its momentum after the collision is also x units.
Using the principle of conservation of momentum, we can write the equation:
Initial momentum = Final momentum
1 unit = x units + x units
1 unit = 2x units
Simplifying the equation, we find that x = 0.5 units.
Therefore, the momentum of the bowling ball after the collision is half a unit. So, the answer to question 22 is A) less than 1 unit.
Now, moving on to question 23. Please provide the full question or description so that I can assist you better.