The final velocity of the man standing on roller skates with the ball caught, after it is thrown at him at a speed of 5 m/s, is 0.042 m/s.

The velocity of the man with the ball can be calculated by conservation of linear momentum:

$p_{i} = p_{f}$

$m_{b}v_{b_{i}} + m_{m}v_{m_{i}} = m_{b}v_{b_{f}} + m_{m}v_{m_{f}}$

Where:

$m_{b}$ : is the mass of the ball = 0.5 kg

$m_{m}$ : is the mass of the man = 59.5 kg

$v_{b_{i}}$ : is the initial velocity of the ball = 5 m/s

$v_{m_{i}}$ : is the initial velocity if the man = 0 (he is standing still)

$v_{b_{f}}$ : is the final velocity of the ball =?

$v_{m_{f}}$ : is the final velocity of the man =?

Since the man catches the ball, his final velocity is the same that the final ball's velocity, so:

$m_{b}v_{b_{i}} + m_{m}v_{m_{i}} = v_{f}(m_{b} + m_{m})$

$v_{f} = \frac{m_{b}v_{b_{i}} + m_{m}v_{m_{i}}}{m_{b} + m_{m}} = \frac{0.5 kg*5 m/s + 0}{0.5 kg + 59.5 kg} = 0.042 m/s$

Therefore, the velocity of the man with the ball is 0.042 m/s.

Learn more about the conservation of linear momentum here:

brainly.com/question/2141713?referrer=searchResults

brainly.com/question/14283213?referrer=searchResults

I hope it helps you!

4 0

2 years ago

How did the author describe the claws of uwang and salagubang?

Anna007 [38]

Answer:

Describes them as sharp and dangerous.

Explanation:

The author describes the claws of uwang and salagubang as large, sharp, dangerous and scary. This creates a certain suspense in the story, as it leaves the reader apprehensive about the imminent danger that these claws pose to those who know them. However, despite their appearance, the claws are not as deadly as they seem because they can only hurt people who are pinched by them.

7 0

3 years ago