Answer:
960 W
Explanation:
F = 800 N
x = 18 m
t = 15 s
Work = Fx= (800 N)(18 m) = 14,400 J
Power = Work / time = (14,400 J) / (15 s) = 960 W
Answer:
a) 
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
a = Acceleration

The acceleration of the bicycle and rider is -1.5 m/s²
Force

The magnitude of the average force needed to bring the bicycle and its rider to a stop is 
Fossil B is older the lower they found the fossil the older it is
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