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2 years ago

What is kinematics ?explain ~

Physics

2 answers:

hodyreva [135]2 years ago

7 0

Answer:

the branch of mechanics concerned with the motion of objects without reference to the forces which cause the motion.

and/or

Kinematics is the study of motion of a system of bodies without directly considering the forces or potential fields affecting the motion. In other words, kinematics examines how the momentum and energy are shared among interacting bodies.

Vlad [161]2 years ago

3 0

Answer:

Kinematics is the branch of physics in which we study the motion of an object without studying the cause of it's motion.

<h3>hope it helps</h3>

have a good day Sir

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The mass of a steel wrecking ball is 1.50 E3 kg. What power is used to raise it to a height of 40.0 m if the work is done in 20.

Yakvenalex [24]

Given,

Mass of the ball (m) = 1.50 x 10³ kg = 1500 kg
Height raised = Displacement of the ball (D) = 40.0 m
Time taken (t) = 20 seconds

Power = Work done(W) ÷ time taken (t)

Work done (W) = Force (F) x Displacement (D)
Force (F) = Mass (m) x Acceleration due to gravity (g)
Acceleration due to gravity for earth (g) = 9.81 m/s²
Therefore,

Force (F) = 1500 x 9.8 = 14715 N

Work done = Force x Displacement = 14715 x 40 = 588600 Joules

Now,
Power = Work done ÷ time taken = 588600 ÷ 20 = 29430 Watts

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4 years ago

An airplane pilot wishes to fly due west. a wind of 80.0 km> h (about 50 mi > h ) is blowing toward the south. (a) if the

diamong [38]

let the plane is flying at some angle theta with west towards north

Now we can use the components

$v_y = 320 sin\theta$

$v_x = 320 cos\theta$

now since plane has to fly towards west so net speed in north must be equal to speed in south for air

So we can say

$320 sin\theta = 80$

$sin\theta = \frac{1}{4}$

$\theta = 14.5 degree$

so plane has to fly in direction 14.5 degree North of west

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3 years ago

Motion is defined by how fast an object is moving? True False

liq [111]

The awswer is false it is velocity

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3 years ago

Read 2 more answers

What causes attraction between molecules of liquid water?

Nezavi [6.7K]

<span>The intermolecular attractions are the caause of attraction between the molecules of liquid water. These intermolecular bonding interactions in water is due to Hydrogen bonding. The hydrogen bonding is in between O and H atoms.</span>

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3 years ago

C. You push a sled of mass 15 kg across the snow with a force of 180 N for a distance of 2.5 m. There is no friction. If the sle

Svetllana [295]

Explanation:

7.7 m/s

1st determine you subject slade to you have a mass of 15 kg being subjected to a force of 180N

so.

180N/15kg=180(kg m)/s^2/15kg=12 ms^2

now determine how long u pushed it

d=0.5 A T^2

sutable the known values getting

2.5 m = 0.5 12 ms^2 T^2

2.5m= 0.6 ms^2 T^2

0.41667 s^2=T^2

0.645497224s=T

the velocity multiply the time by the acceleration giving

0.645497224 s 12 ms^2 =7.745966692 ms.

after rounding the 2 significant u get 7.7 ms

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3 years ago

What is kinematics ?explain ~​

What is kinematics ?explain ~