• Support PF! Buy your school textbooks, materials and every day products via PF Here!

Just need someone to double check

  • Thread starter Melchior25
  • Start date
Could anyone please double check my answers to each of the following statements. Thanks

1. Homework Statement

Determine which of the following moving objects obey the equations of projectile motion.

True A stone is thrown under water.
True A ball is thrown in an arbitrary direction.
True A jet airplane crosses the sky with its engines thrusting the plane forward.
True A rocket moves through the sky after its engines have failed.
False A rocket leaves the launch pad.
 

PhanthomJay

Science Advisor
Homework Helper
Gold Member
7,058
436
Could anyone please double check my answers to each of the following statements. Thanks

1. Homework Statement

Determine which of the following moving objects obey the equations of projectile motion.

True A stone is thrown under water.
True A ball is thrown in an arbitrary direction.
True A jet airplane crosses the sky with its engines thrusting the plane forward.
True A rocket moves through the sky after its engines have failed.
False A rocket leaves the launch pad.
Not all your answers are correct, even when air resistance is neglected (which should have been stated in the problem). Hint: There is only one force acting on an object in ideal projectile motion problems. What is that force? How does it affect your answers?
 

Related Threads for: Just need someone to double check

Replies
9
Views
1K
Replies
3
Views
2K
  • Posted
Replies
1
Views
3K
  • Posted
Replies
1
Views
2K

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving
Top