A bicycle rides in a straight line at 1 km at 10 km/h and then another 1 km at 25 km/h

Physics

1 answer:

elixir [45]3 years ago

3 0

Answer:

17.5

Explanation:

1+1=2

2/2=1

10+25=35

35/2=17.5

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A moving object must have which type of energy

xxMikexx [17]

Answer:

Kinetic Energy

Explanation:

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7 0

4 years ago

A motorist is driving at 20m/s when she sees that a traffic light 200m ahead has just turned red. She knows that this light stay

yuradex [85]

Answer:

5.71428571422 m/s

Explanation:

u = Initial velocity = 20 m/s

v = Final velocity

s = Displacement

a = Acceleration

Time taken = 15-1 = 14 s

Distance traveled in 1 second = $20\times 1=20\ m$

$s=ut+\frac{1}{2}at^2\\\Rightarrow 200-20=20\times 14+\frac{1}{2}\times a\times 14^2\\\Rightarrow a=\frac{2(180-20\times14)}{14^2}\\\Rightarrow a=-1.02040816327\ m/s^2$