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algol [13]
3 years ago
13

Question 3 of 15

Physics
1 answer:
omeli [17]3 years ago
4 0

Answer:

B) Degrees

Explanation:

The directions of the vectors are often defined in terms of due East, due North, due West and due South. A direction exactly in between of North and East can be described as Northeast, similarly we can describe directions in terms of Northwest, Southeast and South west.

From these, the direction of a vector can be easily expressed in degrees, which is measured counter clockwise about its tail from due East. Considering that we can say that East is at 0° , North is at 90° , West is at 180 and South is at 270° counter clockwise rotation from due East.

So, we know that the direction of a vector lying somewhere between due East i.e 0° and due North i.e 90°, will be measured in degrees, which will have a value between 0°-90°

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If a car has a mass of 400 kg and a velocity of 30 m/s to the east, what is the magnitude of its momentum?
Svet_ta [14]
Momentum=mass*velocity
=400kg*30m/s
=12000kg m/s
8 0
3 years ago
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The shape of a planet's orbit is influenced by gravity.
stiks02 [169]

Answer:

True

Explanation:

Gravity is a very important force. Every object in space exerts a gravitational pull on every other, and so gravity influences the paths taken by everything traveling through space. It is the glue that holds together entire galaxies. It keeps planets in orbit.

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The combination of all forces that act on an object are (2 points)
qaws [65]

Answer:

A) The net force

Explanation:

If two forces of equal strength act on an object in opposite directions, the forces will cancel, resulting in a net force of zero and no movement.

5 0
4 years ago
Adrian 80.0kg jumps out of an airplane at an altitude of 1.00×10^3m. After his parechute deploys, the adrian lands with a veloci
Vera_Pavlovna [14]

-- Before Adrian left the airplane, his gravitational potential energy was

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-- When he reached the ground, his kinetic energy was

(1/2) x (mass) x (speed)² = (40kg) x (5m/s)² = 1,000 joules


-- Between the airplane and the ground, the Adrian lost

(784,800 joules) - (1,000 joules) = 783,800 joules 

Where did all that energy go ?
Energy never just disappears.  If it's missing, it had to go somewhere.

The Adrian used  783,800 joules of energy to push air our of his way
so that he could continue his parachute jump, and reach the ground
in time to be home for dinner. 
4 0
3 years ago
Someone please answer this, ill give you brainliest and your getting 100 points.
Aleks04 [339]

Explanation:

The inner part of earth is mainly of two parts

  1. Mantal
  2. Core

Mantal and core both consists of Hot magmas .

So volcanism is required

4 0
3 years ago
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