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poizon [28]
2 years ago
10

PART A) The acceleration of gravity is 9.8 m/s^2 What is the magnitude of the net force on a(n) 82 kg driver operating a dragste

r as it accelerates horizontally along a straight line from rest to 67 m/s in 8.4 s? Answer in units of kN
PART B) The tension in a string from which a 7 kg
object is suspended in an elevator is equal to 74 N. What is magnitude of the acceleration a of the elevator? The acceleration of gravity is 9.8 m/s^2 Answer in units of m/s^2
Physics
1 answer:
baherus [9]2 years ago
8 0

Answer:

0.654 kN

Explanation:

If the driver accelerates from rest to 67 m/s in 8.4 seconds, then the magnitude of the acceleration is:

a = (67 - 0)/ 8.4 = 7.976 m/s^2

Then the net force on the 82 kg driver is:

F = m * a = 82 * 7,976 = 654 N

Therefore, in kN the force's magnitude is:  0.654 kN

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Pavlova-9 [17]

Answer:

12m

Explanation:

To obtain the answer to the question given, we must observe the characteristics of image formed by a plane mirror.

The image formed by a plane mirror have the following characteristics:

1. Laterally inverted.

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4. Virtual.

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The distance between the boy and his image = 6 + 6 = 12m

Therefore, the distance between the boy and his image is 12m.

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2 years ago
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