- #1
phx1
Seriously I feel so stupid because I can't get the answer to the second part of the problem, what am I doing wrong?
2 parts to the problem:
An empty truck whose mass is 1500 kg has a maximum acceleration of 1.4 m/s^2 . What is the maximum force that accelerates the truck? ______N
What is the maximum acceleration when it is carrying a 500 kg load? (hint: same force, but new total mass) ______m/s^2
F=ma
This is for a web based quiz and I got the first part right, it's obviously 2100 N, so then I figured: ok, so to find the acceleration using the same force just solve for a, therefore it should be 2100 N/500 kg, which gives me an answer of 4.2 m/s^2. It's telling me the 2100 N is correct, but not the 4.2 m/s^2 ... what am I doing wrong or not taking into consideration? It's so easy I'm just missing it...
Homework Statement
2 parts to the problem:
An empty truck whose mass is 1500 kg has a maximum acceleration of 1.4 m/s^2 . What is the maximum force that accelerates the truck? ______N
What is the maximum acceleration when it is carrying a 500 kg load? (hint: same force, but new total mass) ______m/s^2
Homework Equations
F=ma
The Attempt at a Solution
This is for a web based quiz and I got the first part right, it's obviously 2100 N, so then I figured: ok, so to find the acceleration using the same force just solve for a, therefore it should be 2100 N/500 kg, which gives me an answer of 4.2 m/s^2. It's telling me the 2100 N is correct, but not the 4.2 m/s^2 ... what am I doing wrong or not taking into consideration? It's so easy I'm just missing it...