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3 years ago

PLEASE HELP!!!!!!! MY HOMEWORK IS DUE TODAY !!!!!!!!

Physics

1 answer:

bogdanovich [222]3 years ago

5 0

Answer:

Distance = 25000000 miles

Time = 50 hours

Explanation:

Venus is the closest planet to Earth. It is about 25 million miles away from Earth. Its precise distance depends on where both Venus and Earth are in their respective orbits

Given that

Speed V = 500000 mph

Distance d = 25 000,000 miles

Speed = distance/ time

Time = distance/speed

Time = 25000000/500000

Time = 50 hours

It will therefore take 50 hours to get to venus at that speed.

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A car accelerates in the +x direction from rest with a constant acceleration of a1 = 1.76 m/s2 for t1 = 20 s. At that point the

alex41 [277]

Answer:

(a) $v_1 = a_1t_1 = 1.76 t_1$

(b) It won't hit

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$v_1 = v_0 + a_1t_1 = 0 +1.76t_1 = 1.76t_1$

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The driver brakes hard and come to rest for t2 = 5s. This means the deceleration of the driver during braking process is

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We can use the following equation of motion to calculate how far the car has travel since braking to stop

$s_2 = v_1t_2 + a_2t_2^2/2$

$s_2 = 35.2*5 - 7.04*5^2/2 = 88 m$

Also the distance from start to where the driver starts braking is

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So the total distance from rest to stop is 352 + 88 = 440 m < 550 m so the car won't hit the limb

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