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Svetllana [295]
3 years ago
11

A car accelerates from zero to a speed of 110

Physics
1 answer:
Verizon [17]3 years ago
3 0

The car's rate of  acceleration : a = 2.04 m/s²

<h3>Further explanation</h3>

Given

speed = 110 km/hr

time = 15 s

Required

The acceleration

Solution

110 km/hr⇒30.56 m/s

Acceleration is the change in velocity over time

a = Δv : Δt

Input the value :

a = 30.56 m/s : 15 s

a = 2.04 m/s²

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Answer:

Explanation:

Given

rope makes an angle of \theta

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applied Force is F

as Force is pulling in nature therefore normal reaction is given by

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Also F\cos \theta =f_r

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F\cos \theta =\mu _kF_N-------1

F\sin \theta =mg-F_N---------2

Squaring 1 & 2 and then adding

F^2=(\mu _kF_N)^2+(mg-F_N)^2

F=\sqrt{(\mu _kF_N)^2+(mg-F_N)^2}

Substitute value of F in 1

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3 years ago
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