Hello everyone! I have been trying to solve this problem for quite some time but with little success. I cannot even seem to find the correct answer and my Mid-Terms are coming up. I figured you guys can help me out with this:
So u have the acceleration, the initial velocity and the displacement. U can use a suvat equation to find the final speed, then u can sub this into ur kinetic energy formula
So u have the acceleration, the initial velocity and the displacement. U can use a suvat equation to find the final speed, then u can sub this into ur kinetic energy formula
Hope i helped bro👊🏾
Ah! I see, that makes perfect sense. Can't believe I ignored those formulas. Really appreciate the quick help, mate. And you definitely helped
Thanks man! My first exam and hopefully it goes well. Quick question, a = 1.5 m/s^2 right? Because I feel like the acceleration changes so it won't be that.
Thanks man! My first exam and hopefully it goes well. Quick question, a = 1.5 m/s^2 right? Because I feel like the acceleration changes so it won't be that.
The acceleration will be the value u have calculated as the forces remain constant, i havent done the math but ur answer to part b will be the constant acceleration of the van.
The bear working out also works, but if u have never encountered conservation of energy in that form before, then this method is not for u
the KE at A is increased by the loss of GPE at B, but it is also decreased by the work against the frictional force.
KE at A = .5x2600x5 J
GPE loss = 2600x 9.8x 75xsin12
work done = 75 x 1400
While I understand what you are stating, I am unable to follow up on getting the final answer. Apologies for I am unfamiliar with their relation to work done. What do you suggest is the final answer? Anyways, I really appreciate the help! The other method seemed easier but I feel like I should use two to confirm my answer.