A certain car can accelerate from rest to 70km/h in 7 seconds.Find the cars average acceleration

2 answers:

7 0

First: we have to express the units of velocity in m/s
70 km/h=70 km/h(1000 m/km)(1h/3600 s)=19.4444....m/s=19.44 m/s

average acceleration= (final velocity -initial velocity)/ time
average acceleration=(19.44 m/s - 0 m/s)/7 s≈2.78 m/s²

Answer: the cars average acceleration would be: 2.78 m/s²

Setler [38]3 years ago

4 0

A= (70-0)/7
a=10 km/hr/sec

10 km/hr = 10 km*100 m/km/(1 hr*3=600 sec/hr)=25/9 m/sec
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a= 25/9 m/sec/sec

Hope this help, plz make brainly-est

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nlexa [21]

Given:

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To find:

Average speed = ?

Formula used:

$v_{avg}$ = $\frac{s}{t}$

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t = total time

Solution:

Average speed of the jet is given by,

$v_{avg}$ = $\frac{s}{t}$

Where $v_{avg}$ = average speed

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Hence, Option (A) is correct.

7 0

3 years ago

the acceleration of a rocket traveling upward is given by a=(6+.02s)m/s^s, where s is in meters. Determine the rocket's velocity

NikAS [45]

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b) time t = 19.27s

Explanation:

Note that;

ads = vdv

where

a is acceleration

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Given;

a = 6 + 0.02s

so,

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Remember that

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