Answer:

Explanation:
The average speed is defined as:

Using the equations for uniformly accelerated motion, we calculate the runner's acceleration:

Now, we can calculate the distance that the runner travels:

Finally, we calculate the runner's average speed:

Answer:
The kinetic energy is 303178 Joule
Explanation:
We must change the speed units to m / s =
1km ---- 1000meters
1h ----- 3600 seconds
v = (95km 1000m / km) / (1h x 3600s / h) = 26, 4 m / s
We use the Kinetic Energy formula: Ec = 1/2 m x v ^ 2
Ec = 1/2 x 870 kg x (26, 4) ^ 2 = 303177, 6 Joule
131.2 J and The last one on number 8
I gave the same answer and it passed.
Answer:
The answer is "
"
Explanation:
In this question, the force value is given and the acceleration is missing that's why the calculation of the acceleration can be defined as follows:
Formula:


