Mr. Ben drove from Town A to Town B. For the first 3 h, he traveled at an average speed of

Physics

1 answer:

Vanyuwa [196]4 years ago

8 0

Answer:

It’s 7 hours

Explanation:

You have to use the formula your teacher has given to you plug in the numbers then solve be sure to use a calculator made for physics it helps a lot :)

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Mg represents the element

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Mg is the symbol for Magnesium. Atomic #- 12

Explanation:

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4 years ago

A train is travelling towards the station on a straight track. It is a certain distance from the station when the engineer appli

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Answer:

500 m

Explanation:

t = Time taken

u = Initial velocity = 50 m/s

v = Final velocity = 0

s = Displacement

a = Acceleration = -2.5 m/s²

Equation of motion

$v=u+at\\\Rightarrow 0=50-2.5\times t\\\Rightarrow \frac{-50}{-2.5}=t\\\Rightarrow t=20\ s$

Time taken by the train to stop is 20 seconds

$s=ut+\frac{1}{2}at^2\\\Rightarrow s=50\times 20+\frac{1}{2}\times -2.5\times 20^2\\\Rightarrow s=500\ m$

∴ The engineer applied the brakes 500 m from the station

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When no forces act on moving objects their paths are normally

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A wheel is rotating at a rate of 2.0 rev every 3.0s. through what angle, in radian , does the wheel rotate in 1.0s?

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$4 \pi$