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WARRIOR [948]
3 years ago
12

A car traveling at a speed of 30.0 m/s encounters an emergency and comes to a complete stop. how much time will it take for the

car to stop if it decelerates at -4.0 m/s2
Physics
1 answer:
Vedmedyk [2.9K]3 years ago
8 0

Answer:7.5seconds

Explanation:

V=0 u=30m/s a=-4m/s^2

t=(v-u)/a

t=(0-30)/-4=-30/-4

t=7.5second

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An orchestra is practicing a piece that is to be played at an allegro tempo. The conductor sets a metronome at 160 beats per min
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A round object of mass 10 kg and radius 0.5 m rolls without slipping down a hill from a height of 4.5 m. If its speed at the bot
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Answer:

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Explanation:

given data

mass m = 10kg

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speed  v = 6.5 m/s

to find out

moment of inertia

solution

we apply here conservation of energy

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here I is moment of inertia we find and

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