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2 years ago

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A car travels 45 km due north and 70 km west. What is the car's displacement? 6 points 24.7 km northeast 83.2 km northwest 76.5

km northwest 115 km north

1 answer:

HACTEHA [7]2 years ago

8 0

Answer:

3150

Explanation:

if if you were two times 45 times 70 it would give you that answer

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An automobile of mass 1300 kg has an initial velocity of 7.20 m/s toward the north and a final velocity of 6.50 m/s toward the w

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Answer

given,

mass of the automobile = 1300 Kg

initial speed of the automobile in north direction= 7.20 j m/s

final speed of the automobile in west direction = -6.50 i m/s

now,

change in momentum

$\Delta P = m (v_f - v_i)$

$\Delta P = 1300\times (-6.50 \hat{i} - 7.20 \hat{j})$

$\Delta P = 1300\times \sqrt{(-6.50)^2 + (-7.20)^2}$

$\Delta P = 1300\times 9.7$

$\Delta P = 12610\ kg.m/s$

now, direction calculation

$\theta = tan^{-1}(\dfrac{7.2}{6.5})$

$\theta = tan^{-1}(1.1076)$

$\theta = 47.92^0$

direction of the car is 48° in south west direction.

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A plane flies horizontally at an altitude of 3 km and passes directly over a tracking telescope on the ground. when the angle of

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Explanation:

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