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ollegr [7]
3 years ago
8

What is a device that minimizes the force on a microscopic object during a collision?

Physics
1 answer:
liraira [26]3 years ago
3 0
An impact which stops a moving object must do enough work to take away its kinetic energy, so extending the distance moved during the collision reduces the impact force.
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When a 9.9 kg object is in free fall, it feels a force of 97.02 N. what is its acceleration?
Free_Kalibri [48]

The acceleration of an object in free fall is 9.8 m/s^2

Explanation:

We can solve the problem by using Newton's second law of motion, which states that:

F=ma

where

F is the net force on an object

m is the mass of the object

a is its acceleration

For the object in this problem, we have:

m = 9.9 kg is its mass

F = 97.02 N is the net force on the object

So, we can rearrange the equation to find its acceleration:

a=\frac{F}{m}=\frac{97.02}{9.9}=9.8 m/s^2

This value is actually known as acceleration of gravity (g), and it is the acceleration that any object in free fall has near the Earth's surface, regardless of its mass.

Learn more about Newton's second law here:

brainly.com/question/3820012

And about free fall:

brainly.com/question/1748290

brainly.com/question/11042118

brainly.com/question/2455974

brainly.com/question/2607086

#LearnwithBrainly

6 0
2 years ago
1. A bicyclist travels for 1.5 hours at an average speed of 23 km/h. How far does the bicyclist travel
allsm [11]

Explanation:

23 km/hr x 1.5 hrs = 34.5 km

34.5 km = 34500 meters

8 0
3 years ago
Read 2 more answers
Fleas have remarkable jumping ability. a 0.60 mg flea, jumping straight up, would reach a height of 40 cm if there were no air r
irakobra [83]
To answer, we determine the velocity of the flea when it leaves the ground. Using the given value for distance, the velocity can be determined through the equation,

                     2a d = (Vf)² - (Vi)²

where a is the acceleration due to gravity, d is distance, Vf is the final velocity which is equal to zero and Vi is the initial velocity. Substituting the known values,

               2(9.8 m/s²)(40cm/100cm) = (Vi)²

The value of Vi from the equation is 2.8 m/s. 

The equation for determining the kinetic energy is:
                   KE = 0.5mv²

Substituting,
                  KE = 0.5(0.60 x 10^-3g)(1 kg/1000g)(2.8 m/s)²
                        KE = 2.352 x 10^-6 J
4 0
3 years ago
Read 2 more answers
Estimate the number of Ping-Pong balls that can be packed into an average size room (without crushing them). Given that Ping-Pon
scoray [572]

Answer: 3,893,845.918 Ping-Pong balls

Explanation:

The volume of an average room is:

V_{room}=(length)(width)(height) (1)

V_{room}=(12 ft)(18 ft)(9 ft)=1944 ft^{3} (2)

Now let’s transform this V_{room} to units of cm^{3}, knowing 1 ft=30.48 cm:

V_{room}=1944 ft^{3}\frac{{(30.48 cm)}^{3}}{1ft^{3}}=55,047,949.78 cm^{3} (3)

On the other hand, we have Ping-Pong balls with a radius r=1.5 cm, and their volume is given by:

V_{balls}=\frac{4}{3} \pi r^{3} (4)

V_{balls}=\frac{4}{3} \pi (1.5 cm)^{3} (5)

V_{balls}=14.137 cm^{3} (6)

Now, the number n of Ping-Pong balls that can be packed into the room is:

n=\frac{V_{room}}{V_{balls}} (7)

n=\frac{55,047,949.78 cm^{3}}{14.137 cm^{3}}  (8)

n=3,893,845.918 This is the number of Ping-Pong balls that can be packed into an average size room

7 0
3 years ago
What is the time required for an object starting at rest to fall freely 500 meters near earth surface
Gnom [1K]
Using kinematics, approximately 10.1 seconds
3 0
2 years ago
Read 2 more answers
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