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Dan is gliding on his skateboard at 4.0 m/s. He suddenly
Chapter 9, Problem 21E(choose chapter or problem)
Problem 21E
Dan is gliding on his skateboard at 4.0 m/s. He suddenly jumps backward off the skateboard, kicking the skateboard forward at 8.0 m/s. How fast is Dan going as his feet hit the ground? Dan’s mass is 50 kg and the skateboard’s mass is 5.0 kg.
Questions & Answers
QUESTION:
Problem 21E
Dan is gliding on his skateboard at 4.0 m/s. He suddenly jumps backward off the skateboard, kicking the skateboard forward at 8.0 m/s. How fast is Dan going as his feet hit the ground? Dan’s mass is 50 kg and the skateboard’s mass is 5.0 kg.
ANSWER:
Step 1 of 3
In this question,we need to find speed with which Dan's feet hit the ground
Data given
Velocity of Dan on skateboard \(v_{d b}=4.0 \mathrm{~m} / \mathrm{s}\)
Velocity of skateboard \(v_{b}=8.0 \mathrm{~m} / \mathrm{s}\)
Mass of Dan \(m_{d}=50 \mathrm{~kg}\)
Mass of skateboard \(m_{b}=5.0 \mathrm{~kg}\)