To ask an investigative question, follow these steps:
1. Identify a topic or subject of interest: Choose a subject that is interesting, relevant, and has the potential for exploration or further inquiry.
2. Do some background research: Before formulating your investigative question, it is a good idea to do some basic research to understand the context of the topic and gather some background information.
3. Formulate your main question: An investigative question should be clear, specific, and researchable. It is often helpful to start with "What," "How," or "Why" to help frame the question. For example, "What factors contribute to the success of a small business?" or "How do different types of exercise affect heart rate?"
4. Consider sub-questions: Break down your main question into smaller, more manageable sub-questions that can guide your research. These can help you focus on specific aspects of your investigation or can serve as steps to help you answer your main question.
5. Check for assumptions: Make sure your investigative question is not based on assumptions or preconceived notions. Instead, the question should be open-ended and encourage inquiry and discovery.
6. Refine your question if necessary: After formulating your investigative question, you may realize that it needs to be refined or rephrased. This is perfectly normal—revisiting and revising the question is a crucial part of the investigative process.
The following data concerns a tennis ball at a given instant before it is struck by a tennis racket;
horizontal momentum of tennis ball= 2.4Ns
kinetic energy of ball= 45J
a) why is correct to give the direction of the momentum but not the kinetic energy
b) write down in terms of the mass m and the velocity v of the body, expressions for
i) momentum
ii) the kinetic energy
c) use your answer to (b) to help calculate the mass and the velocity of the ball
d) when the racket hits the ball it strikes it with a constant force of 60N in a direction opposite to its momentum, ringing to rest momentarily
calulate
i)the time the tennis ball takes to stop
ii) the distance the tennis ball travels while stopping
e) the force of 60N then contiues to act on the tennis ball for a further 0.60s. calculate
i) the momentum of the ball
ii)the distance the tennis ball travels while stopping
i got
A AND B
and i found the velocity for C buh i can't find the mass
i also don't get part D and E
i need someone to explain and not just give me the formulas
i got
A AND B
and i found the velocity for C buh i can't find the mass
i also don't get part D and E
i need someone to explain and not just give me the formulas
ollowing data concerns a tennis ball at a given instant before it is struck by a tennis racket;
horizontal momentum of tennis ball= 2.4Ns
kinetic energy of ball= 45J
c) use your answer to (b) to help calculate the mass and the velocity of the ball
momentum = mv
2.4Ns= mv
KE=1/2 mv^2
45J= 1/2 mv^2
divide that equation by the one above it.
45/2.4=1/2 mv^2 / mv= 1/2 v
or v= you do it.
Now, knowing v, 2.4= mv, solve for mass m.
d) when the racket hits the ball it strikes it with a constant force of 60N in a direction opposite to its momentum, ringing to rest momentarily
calulate
i)the time the tennis ball takes to stop
by definition, impulse equals change in momentum.
impulse= final momentum - initial momentum
Force*time= 0 = 2.4Ns
solve for time
ii) the distance the tennis ball travels while stopping
By definition, the change of Kinetic energy equals the work done on the ball.
work= change KEnergy
Force*distance= final KE - initial KE = 0-45J
solve for distance.
e) the force of 60N then contiues to act on the tennis ball for a further 0.60s. calculate
i) the momentum of the ball
again, impulse equals change of momentum
Force*time= change of momentum (it started at a stop, then the force was added)
Force*time= final momentum solve for final momentum
ii)the distance the tennis ball travels while stopping .
This part makes no sense. A force is added to move the ball, not stop it
How to ask a investigative question
1 answer