2 years ago

Newton’s second law: Force equals mass times acceleration (=_).

Physics

1 answer:

DIA [1.3K]2 years ago

7 0

F n = ma / unbalanced force - In the direction of the force.

You might be interested in

If the velocity of an object is doubled, its kinetic energy is ______

swat32

Increased by a factor of 4

4 0

3 years ago

A skater extends her arms, holding a 2 kg mass in each hand. She is rotating about a vertical axis at a given rate. She brings h

Usimov [2.4K]

Explanation:

It is known that relation between torque and angular acceleration is as follows.

$\tau = I \times \alpha$

and, I = $\sum mr^{2}$

So, $I_{1} = 2 kg \times (1 m)^{2} + 2 kg \times (1 m)^{2}$

= 4 $kg m^{2}$

$\tau_{1} = 4 kg m^{2} \times \alpha_{1}$

$\tau_{2} = I_{2} \alpha_{2}$

So, $I_{2} = 2 kg \times (0.5 m)^{2} + 2 kg \times (0.5 m)^{2}$

= 1 $kg m^{2}$

as $\tau_{2} = I_{2} \alpha_{2}$

= $1 kg m^{2} \times \alpha_{2}$

Hence, $\tau_{1} = \tau_{2}$

$4 \alpha_{1} = \alpha_{2}$

$\alpha_{1} = \frac{1}{4} \alpha_{2}$

Thus, we can conclude that the new rotation is $\frac{1}{4}$ times that of the first rotation rate.

8 0

3 years ago

After the same car leaves the platform, gravity causes it to accelerate downward at a rate of 9.8 m/s2. What is the gravitationa

Simora [160]

The gravitational force on the car is

(9.8 m/s^2) x (the car's mass in kg).

The unit is newtons.

7 0

2 years ago

a peice of titanium metal has a mass of 67.5 gm and a volume of 15 cm cubed. what is the density od titanium?

Nuetrik [128]

density=mass/volume

mass=67.5

volume=15cm cube

67.5/15

4.5g/cm cube

6 0

3 years ago

Read 2 more answers

Which is the most common use for infrared waves?

Alex Ar [27]

Night vision cameras

Explanation:

One of the most common use of infrared waves is in night vision cameras. Infrared waves are electromagnetic radiations whose wavelengths are longer than those of visible light in the electromagnetic spectrum

They are used:

In night vision cameras
Thermal imaging whereby the radiation is used to monitor temperature differences between bodies.
It can also be used as source of heating.

Learn more:

Radiation brainly.com/question/7746015

#learnwithBrainly

6 0

3 years ago

Newton’s second law: Force equals mass times acceleration (__=___).

Newton’s second law: Force equals mass times acceleration (=_).