50 POINTS AND BRAINLEIST how is the mechanical advantage of a wedge calculated in the animation
1 answer:
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Answer:
B) 35 W
Explanation:
Force applied by child = 75 N = F
Distance travelled by child = 42 m = d
Time traveled for is 1.5 min = 1.5×60 = 90 seconds = t
Work done by the child
W = Fdcosθ
⇒W = 75×42cos0
⇒W = 3150 Joule
Power is defined as work done per unit time
∴ The average power generated by the child is 35 W
Answer:
The value is
Explanation:
From the question we are told that
The average acceleration of the bicycle is
The initial forward velocity is
Generally from kinematic equations we have that
Here v is the final velocity of the bicycle and the value is v = 0 m/s
So
=> t = 18.6 s