A Skateboarder and an Observer#

Abbas is on a skateboard and has an initial velocity of (1.23 \(m/s\)) \(\hat{\imath}\) relative to Emilia who is at rest with respect to the earth. Just as they are gliding past Emilia, Abbas throws a ball in the positive \(x\)-direction from a height of 1.83 m. According to Abbas, the ball has an initial velocity of (3.75 \(m/s\)) \(\hat{\imath}\).

Part 1#

What is the initial velocity of the ball according to Emilia?

Answer Section#

Please enter in a numeric value in \(m/s\).

Part 2#

How long is the ball in the air?

Answer Section#

Please enter in a numeric value in \(s\).

Part 3#

Relative to Emilia, where does the ball land?

Answer Section#

Please enter in a numeric value in \(m\).

Part 4#

If the mass of Abbas plus the skateboard is 120.0 \(kg\) and the ball has a mass of 1.17 \(kg\), what is Abbas’s speed, as measured by Emilia, immediately after releasing the ball?

Answer Section#

Please enter in a numeric value in \(m/s\).

Part 5#

Relative to Abbas, where does the ball land?

Answer Section#

Please enter in a numeric value in \(m\).

Attribution#

Problem is licensed under the CC-BY-NC-SA 4.0 license.
The Creative Commons 4.0 license requiring attribution-BY, non-commercial-NC, and share-alike-SA license.