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sergiy2304 [10]
3 years ago
9

A physicist wants to study the motion of a car.

Physics
1 answer:
Aleonysh [2.5K]3 years ago
3 0

Answer:

a.

Explanation:

in a

1 mi = 1.61km

so,in 50 miles

50 mi = 50 \times 1.61

= 80.5 \: km

in b

1 \: mi = 1760 \: yd

so in 22.3 miles

22.3 = 22.3 \times 1760

= 39248 \: yd

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Answer:

-1.09m/sec^2

Explanation:

Acceleration= (Vf-Vi)/Time

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3 years ago
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In magazine car tests an important indicator of performance is the zero to 60 mph (0 to 96.6 km/h) acceleration time. A time bel
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Answer:

2.73414 seconds

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Explanation:

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v=60\times \dfrac{1609.34}{3600}=26.822\ m/s

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or

v=u+at\\\Rightarrow t=\dfrac{v-u}{a}\\\Rightarrow t=\dfrac{26.822-0}{9.81}\\\Rightarrow t=2.73414\ s

The time taken is 2.73414 seconds

The potential energy is given by

U=mgh\\\Rightarrow U=1300\times 9.81\times 36.66766\\\Rightarrow U=467622.66798\ J

The change in potential energy is 467622.66798 J

5 0
3 years ago
D section a only still need help on this
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