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spoogiest
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Currently working on a high school physics assignment.
I need help on some questions, just so that I know I am in the right direction. I am not here to get you guys to do my homework for me. But anyway, the following questions are about a log fume ride, and the acceleration and velocity of a boat going down a slope.
1. The first question asks to work out the acceleration. (Force = 2450N, Mass = 500KG)
2. The second question asks for the velocity. (Time for the boat to reach bottom = 2.96s)
3. The third question asks if a change of mass would affect the acceleration and velocity.
f=ma
a=change in V/t
1. For question 1, I simply used the f=ma equation, finding a. a=f/m, a=2450/500, a=4.9m/s forwards. I assume this is correct.
2. The second question, I used the acceleration formula to work out the change in velocity. change in velocity = 4.9 x 2.6, therefore velocity = 14.504m/s or 52.214km/h. However the real answer is given, being 58km/h. Is there any reason why I am quite a bit off? or am I using the wrong equation.
3. For the third question, I know physics says that everything falls at the same rate no matter what the mass, but after doing a few sample calculations changing the mass around in each case, the acceleration and velocity for each are always different. Am I going wrong anywhere?
Anyway, any help is greatly appreciated.
Thanks :)
I need help on some questions, just so that I know I am in the right direction. I am not here to get you guys to do my homework for me. But anyway, the following questions are about a log fume ride, and the acceleration and velocity of a boat going down a slope.
Homework Statement
1. The first question asks to work out the acceleration. (Force = 2450N, Mass = 500KG)
2. The second question asks for the velocity. (Time for the boat to reach bottom = 2.96s)
3. The third question asks if a change of mass would affect the acceleration and velocity.
Homework Equations
f=ma
a=change in V/t
The Attempt at a Solution
1. For question 1, I simply used the f=ma equation, finding a. a=f/m, a=2450/500, a=4.9m/s forwards. I assume this is correct.
2. The second question, I used the acceleration formula to work out the change in velocity. change in velocity = 4.9 x 2.6, therefore velocity = 14.504m/s or 52.214km/h. However the real answer is given, being 58km/h. Is there any reason why I am quite a bit off? or am I using the wrong equation.
3. For the third question, I know physics says that everything falls at the same rate no matter what the mass, but after doing a few sample calculations changing the mass around in each case, the acceleration and velocity for each are always different. Am I going wrong anywhere?
Anyway, any help is greatly appreciated.
Thanks :)