Question

You're driving at speed v_0 when you spot a stationary moose on the road, a distance d ahead. Find an expression for the magnitude of the acceleration you need if you're to stop before hitting the moose. Please explain thanks.

Answer 1

you can use the equation
\[v _{f}^{2}=v _{0}^{2}+2aδx\]

where delta x = d and v final = 0 and from there you can write an expression for acceleration that should look like
\[(v _{f}^{2}-v _{0}^{2})/δx=a\]

Answer 2

Thank You so much for explaining.