the graph shows the acceleration of a racehorse taking off from a starting gate. by how much did the horses…

the graph shows the acceleration of a racehorse taking off from a starting gate. by how much did the horses speed increase between 4 seconds and 6 seconds? a 20 m/s b 27 m/s c 45 m/s d 65 m/s

the graph shows the acceleration of a racehorse taking off from a starting gate. by how much did the horses speed increase between 4 seconds and 6 seconds? a 20 m/s b 27 m/s c 45 m/s d 65 m/s

Answer

Explanation:

Step1: Identify speeds at 4s and 6s

From the graph, at (t = 4s), speed (v_1=20m/s); at (t = 6s), speed (v_2 = 45m/s).

Step2: Calculate speed - increase

The increase in speed (\Delta v=v_2 - v_1). Substitute (v_1 = 20m/s) and (v_2=45m/s) into the formula: (\Delta v=45 - 20=25m/s).

Answer:

25 m/s