3 years ago

I WILL MARK BRAINLIEST IF CORRECT!!!

Physics

1 answer:

Akimi4 [234]3 years ago

5 0

Answer:

I'm fairly sure that the answer is "100 m/s"

Explanation:

Fnet=ma

a=Fnet/m

a=4 N / 0.040 kg

a=100 m/s

please check my work before you submit, i don't wanna let cha down :)

You might be interested in

Now in "real life," this automobile is cruising at 20.5 m/s (equal to 73.8 km/hr) when it is about to hit a pedestrian stuck in

algol13

Answer:

He needs 1.53 seconds to stop the car.

Explanation:

Let the mass of the car is 1500 kg

Speed of the car, v = 20.5 m/s

He will not push the car with a force greater than, $F=2\times 10^4\ N$

The impulse delivered to the object is given by the change in momentum as :

$F\times t=mv\\\\t=\dfrac{mv}{F}\\\\t=\dfrac{1500\times 20.5}{2\times 10^4}\\\\t=1.53\ s$

So, he needs 1.53 seconds to stop the car. Hence, this is the required solution.

5 0

4 years ago

In regions where few species existed before or where species were wiped out what occurs?

marysya [2.9K]

I cant really say but i believe it is called extinction

5 0

4 years ago

1.) What's NH3?

irina [24]

1. NH3 --- Ammonia

2. N2 --- Nitrogen Gas

3. NO2 --- Nitrite

4. NO3 --- Nitrate

3 0

4 years ago

A car has a mass of 1200 kg. A man can comfortably push down with a force of 400 N. If the small piston in a hydraulic jack has

kotegsom [21]

A) F1/A1=F2/A2
F2 = 12000 Newtons, while F1 = 400 Newtons and area A1= 6 cm²
400/6 = 12000/A2
A2 = (6 × 12000)/400
= 180 cm²

b) How long does this lift the car
d2 =F1/F2×d1
= (400/12000)× 20
= (1/30)×20
= 20/30
= 0.67 cm
This lifts the car a distance of 0.67 cm

4 0

3 years ago

If a substance has a pH of 10 -11, it is considered a ...

Mrac [35]

Answer:

Base

Explanation:

anything with a pH between 0-6 is an acid. pH of 7 means neutral. 8-14 means it is a base

hope I helped :)

8 0

4 years ago