Recent content by susan_khan

Sorry I meant I’m getting an angle of 45 when I draw my diagram not the actual angle that needs to be solved for using sine. When I add 15 and 30 based on my diagram I get 45. Is that the right angle to plug into the cosine law?

I’m getting an angle of 45 degrees is that somewhat correct?

I’m getting an angle of 45 degrees is that correct?

Yes thank you so much!!

An airplane has an air velocity of 500 km/h [N 30 E] and encounters a wind from [S 75 W] at 180 km/h, find the ground velocity. Make sure you draw a big, labelled diagram. Please help! I’m understand the calculations that need to be done (cosine law then sine law for the angle) but I’m a little...

Yes the velocity was not specified in the question, it was more so a scenario to think about. The reason I chose 0.5 as my answer is because I thought that the velocity of the small mass Ball B would change more; in the sense that the smaller mass would lose some energy to the bigger mass...

I'm a little confused as to what the answer could be. This was one of my homework questions that I got wrong as I chose 0.5 v as the answer. Would someone be able to tell me what the correct answer would be?

I tried rereading the problem but I'm still unable to figure out the value for v1f. Could it be 0?

m1v1+m2v2 = m1v1f + m2v2f (0.045)(67)+(0.15)(56) = 0.045v1f + 0.15v2f 3.015 + 8.4 = 0.045v1f + 0.15v2f Before continuing I used this equation to solve for v1f vi1 +v1f = V2i +v2f 67 + v1f = 56 +v2f 67 - 56 + v1f = 56 - 56 +v2f 11 + v1f = v2f Sub this equation in: 3.015 + 8.4 = 0.045v1f +...

Thank you for replying, but when solving I didn't drop the masses I just substituted 11 + v1f = v2f into this equation m1v1+m2v2 = m1v1f + m2v2f after inputting the values.

A 0.045 kg golf ball is hit by a driver. The head of the driver has a mass of 0.15 kg, and travels at a speed of 56 m/s before the collision. The ball has a speed of 67 m/s as it leaves the clubface. What is the speed of the head of the driver immediately after the collision? I'm not sure...