Question

A rabbit runs in a straight line with a velocity of +1.4 m/s for a period of time, rests for 11 s, and then runs again along the same line at +0.56 m/s for an unknown amount of time. The rabbit travels a total distance of 1248 m, and its average speed is 0.78 m/s.
(a) What is the total time the rabbit spends running at 1.4 m/s?
(b) How long does it spend running at 0.56 m/s?

Answer 1

We know the formula for motion, x = vt
It's pretty easy for us to since it's just a straight line, so we have \[(+1.4 m/s)t+(+0.56 m/s)t_2 = 1248m\] we also have the average speed being +0.78 m/s, so we can set up another equation for average, any idea how? Because once we set this equation up you can solve the problem simply.

Answer 2

no

Answer 3

How do you find average speed?

Answer 4

xf-xi/tf-ti