I think the answer is A I’m
Not sure tho
Average speed = (total distance covered) / (time to cover the distance)
Total distance = (77km + 66km) = 143 kilometers
Time to cover the distance = 2 hours
Average speed = (143 km) / (2 hours) = 71.5 km per hour
The answer is D. 32 m.
The simple equation that connects speed (v), time (t), and distance (d) can be expressed as:
![v= \frac{d}{t}](https://tex.z-dn.net/?f=v%3D%20%5Cfrac%7Bd%7D%7Bt%7D%20)
⇒
![d=v*t](https://tex.z-dn.net/?f=d%3Dv%2At)
It is given:
![v = \frac{1.6m}{0.5s} = \frac{1.6m*2}{0.5s*2}= \frac{3.2m}{1s} = 3.2 m/s](https://tex.z-dn.net/?f=v%20%3D%20%20%5Cfrac%7B1.6m%7D%7B0.5s%7D%20%3D%20%5Cfrac%7B1.6m%2A2%7D%7B0.5s%2A2%7D%3D%20%5Cfrac%7B3.2m%7D%7B1s%7D%20%20%3D%203.2%20m%2Fs)
t = 10 s
d = ?
So:
Energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object.