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AysviL [449]
3 years ago
13

A car is traveling West on Old Milton Parkway at 100 km/hr when the driver spots a police cruiser in the bushes. The driver hits

the brakes and the velocity of the car is reduced to 80 km/hr. How would you describe the acceleration of the car and driver? (Assume east is the positive direction).
The car had negative acceleration with velocity in the positive direction

A)The car had positive acceleration with velocity in the negative direction

B)The car experienced positive accelerationwith velocity in the negative direction

C)The car experienced negative acceleration with velocity in the positive direction.
Physics
1 answer:
Alisiya [41]3 years ago
5 0

The answer is option C) The car experienced negative acceleration with velocity in the positive direction.

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In February 1955, a paratrooper fell 362 m from an airplane without being able to open his chute but happened to land in snow, s
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Answer:

s = 0.9689 m

Explanation:

given,

Height of fall of paratroopers = 362 m

speed of impact = 52 m/s

mass of paratrooper = 86 Kg

From from snow on him = 1.2 ✕ 10⁵ N

now using formula

F = m a

a = F/m

a = \dfrac{1.2 \times 10^5}{86}

a =1395.35\ m/s^2

Using equation of motion

v² = u² + 2 a s

s =\dfrac{v^2}{2a}

s =\dfrac{52^2}{2\times 1395.35}

s = 0.9689 m

The minimum depth of snow that would have stooped him is  s = 0.9689 m

8 0
3 years ago
A technician is diagnosing a car that had both front brake hoses replaced 5,000 miles ago. An inspection reveals that the right
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Answer:

Option B

Technician B only is correct

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Technician B on the other hand, gives a more accurate reason, since a twisted brake hose will definitely fail and rupture once enough force is applied to it, which is most likely the case of what happened considering the mileage it ran before rupturing. Within this mileage, it is very possible for the pressure on the already twisted brake hose to have been damaging it gradually before finally making it to rupture.

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Need help ASAP please help me please
lbvjy [14]

Answer:

145

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