Answer:
(a) Speed = 6.875 m/s
(b) Kinetic Energy = 1.70 kJ
(c) Average power = 1.06 kW
Step-by-step explanation:
Given:
d = 5.5 m
t = 1.6 s
W = 706 N
Part (a)
Using the equation of motion with the assumption of zero initial speed:


The speed of the sprinter then become:

Part (b)
Convert the weight of the sprinter to mass:



KE (Kinetic Energy) can then be calculated as:



Part (c)
The change of the kinetic energy is equivalent to the work done by the sprinter. The average power P is the rate of the work done and can be calculated as



Answer:
B.
Step-by-step explanation:
B should be (2,3) and D should be (2, -4) because its just a reflection of the two points. :)
Answer:
100
Step-by-step explanation:
1_2_3_4_5_6_7_8_9_0
Answer:
C. 7
Step-by-step explanation:
Therefore, by Basic Proportionality theorem:

Answer:
imagine doing alex
Step-by-step explanation: