Recent content by catfish

Sweet, thanks for the help.

I think it's assumed that it is but I apparently also have to work out the speed of the object using the information and the formula provided.

I've got an answer for my first question. Is it supposed to be 455Hz?

[Mentor's note - This thread was moved here from a non-homework forum, therefore it does not use the template.] Hi guys Need some help answering questions about frequencies and calculating velocity. I'm given two frequencies: 470Hz for an approaching object, 440Hz for when the object is moving...

Ohhhh I think I know why I was confused. I was thinking about changes in velocity. So the velocity will change even though acceleration is still the same, right?

Ok thanks. Next question. If the object bounces back up, is the acceleration still the same? And how do I go about working out the time it takes after impact to bounce to a height? The only details I've got is what I used to calculate velocity and momentum at impact.

Hi guys To me I sound stupid, but I'm probably just overthinking the question. I know acceleration due to gravity is 9.8m/s/s. But if the distance is less than a metre or takes less than a second, wouldn't the acceleration be less than 9.8? If so, how is that worked out? If not, then is it...