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max2010maxim [7]

3 years ago

14

What is the definition of dynamics in physics

1 answer:

grin007 [14]3 years ago

5 0

A part of mechanics dealing with the movement of bodies under the activity of power.

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A collision between two moving objects can be represented on a position-time graph.

nexus9112 [7]

Answer:

the correct answer is false

Explanation:

3 0

3 years ago

Read 2 more answers

Can an object be accelerated while traveling at constant velocity? Why or why not?

AysviL [449]

Answer:

An object's acceleration is the rate its velocity (speed and direction) changes. Therefore, an object can accelerate even if its speed is constant - if its direction changes. If an object's velocity is constant, however, its acceleration will be zero.

3 0

3 years ago

45 km/have to m/s solution

Slav-nsk [51]

We know, 1 m/s = 3.6 Km/h
So, 45 Km/h = 45/3.6 = 12.5 m/s

In short, It would be equal to 12.5 m/s

Hope this helps!

7 0

4 years ago

If a 2kg ball has and initial velocity of

lakkis [162]

Answer:

$\boxed {\boxed {\sf 12 \ Newtons }}$

Explanation:

Force is equal to the product of mass and acceleration.

$F=m*a$

We know the mass, but not the acceleration. Therefore, we must calculate it before we can calculate force.

1. Calculate Acceleration

Acceleration is the change in velocity over the change in time.

$a=\frac{V_f-V_i}{t}$

The final velocity is 10 meters per second and the initial velocity is 4 meters per second. The time is 1 second.

$V_f=10 \ m/s \\V_i= 4 \ m/s \\t= 1 \ s$

Substitute the values into the formula.

$a=\frac{10 \ m/s-4 \ m/s }{1 \ s}$

Solve the numerator.

$a=\frac{6 \ m/s}{1 \ s }$

Divide.

$a= 6 \ m/s/s=6 \ m/s^2$

2. Calculate Force

Now we know the acceleration and the mass.

$m= 2 \ kg \\a= 6 \ m/s^2$

Substitute the values into the fore formula.

$F= 2 \ kg * 6 \ m/s^2$

Multiply.

$F= 12 \ kg*m/s^2$

1 kilogram meter per square second is equal to 1 Newton.
Our answer of 12 kg*m/s² is equal to 12 Newtons

$F= 12 \ N$

The force applies to the ball was <u>12 Newtons.</u>

8 0

3 years ago

Greg can't remember how tall his 9-month-old niece is. He guesses that she is 100 cm tall. Which of the following is true?

77julia77 [94]

Answer:

C

Explanation:

7 0

3 years ago