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Ray Of Light [21]
3 years ago
10

Which is a scalar quantity displacement distance force acceleration​

Physics
1 answer:
cestrela7 [59]3 years ago
5 0

A scalar is a quantity that is fully described by a magnitude only. It is described by just a single number. Some examples of scalar quantities include speed, volume, mass, temperature, power, energy, and time. A vector is a quantity that has both a magnitude and a direction.

I hope this helps you.

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Identify the type of force described (contact or noncontact):
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1.contact force

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Explanation:

1. Because bodies are in contact

2.Bodies are not in contact.

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Boat A and Boat B have the same mass. Boat A’s velocity is three times greater than that of Boat B. Compared to the kinetic ener
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In figures (a)-(d), a block moves to the right in the positive x direction through the displacement Δx while under the influence
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Which frequencies can humans can hear but not mice
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Two trains traveling towards one another on a straight track are 300m apart when the engineers on both trains become aware of th
sattari [20]

Answer:

48 m

Explanation:

Two trains traveling towards one another on a straight track are 300m apart when the engineers on both trains become aware of the impending Collision and hit their brakes. The eastbound train, initially moving at 97.0 km/h Slows down at 3.50ms^2. The westbound train, initially moving at 127 km/h slows down at 4.20 m/s^2.

The eastbound train

First convert km/h to m/s

(97 × 1000)/3600

97000/3600

26.944444 m/s

As the train is decelerating, final velocity V = 0 and acceleration a will be negative. Using third equation of motion

V^2 = U^2 - 2as

O = 26.944^2 - 2 × 3.5 S

726 = 7S

S = 726/7

S1 = 103.7 m

The westbound train

Convert km/h to m/s

(127×1000)/3600

127000/3600

35.2778 m/s

Using third equation of motion

V^2 = U^2 - 2as

0 = 35.2778^2 - 2 × 4.2 × S

1244.52 = 8.4S

S = 1244.52/8.4

S2 = 148.2 m

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Therefore, the distance between them once they stop is 48 metres approximately.

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3 years ago
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