Need help with a force vs time graph.

[Bensky]

[SOLVED] Need help with a force vs time graph. :(

Homework Statement

Which interval in Fig. MC3 corresponds to the greatest change in the speed of the body?

Figure MC3 is above.

a) 1-2s
b) 0-1s
c) 2-3s

Homework Equations

None

The Attempt at a Solution

I figured out that 1-2s has the greatest slope of the three, would that indicate that it has the greatest change in speed? It seems logical to me but I don't really understand this graph, so I don't want to guess and get the wrong answer (this is my last try to get it right). It seems like it would be really simple.

 

[berkeman]

Homework Equations

None

Wrong. What is the fundamental equation that relates force, mass and acceleration?

 

[OJones]

berkeman has it quite correct. Look at the relationship between force and rate of change of velocity (acceleration).

P.S. strictly this should be rate of change of momentum, but I won't confuse the issue ;-)

Edit: also, are you sure that the 1-2 second interval has the highest slope (gradient)? Look carefully.

 

[Bensky]

berkeman has it quite correct. Look at the relationship between force and rate of change of velocity (acceleration).

P.S. strictly this should be rate of change of momentum, but I won't confuse the issue ;-)

Edit: also, are you sure that the 1-2 second interval has the highest slope (gradient)? Look carefully.

Thank you. :) solved