3 years ago

A dragster going 15m/s increases its velocity to 25 m/s north in 4 seconds.

1 answer:

3 0

Initial speed, v₁ = 15 m/s
Final speed, v₂ = 25 m/s
Duration of the acceleration, t = 4 s

Calculate the acceleration.
a = (v₂ - v₁)/t
= (25-15 m/s)/(4 s)
= 2.5 m/s²

Answer: 2.5 m/s²

You might be interested in

What unit describes thr magnitude, or size of a force?

Bess [88]

N - adica Newtonul.
Sper că team ajutat

5 0

3 years ago

Read 2 more answers

What is the speed of a car that travels 0.200 km in 95 seconds? State your answer in meters per second.

WARRIOR [948]

Answer:

<h2>2.10 meters per second</h2><h2 />

Explanation:

speed (velocity) = distance / time

= <u>0.2 km (1000 m/km) </u>

95 secs.

= 2.10 meters per second

8 0

3 years ago

Star A and Star B have measured stellar parallax of 1.0 arc second and 0.75 arc second, respectively. Which star is closer? How

zhuklara [117]

Answer:

Star A is closer than Star B

Explanation:

As we know that in parallax method of distance measurement the angle subtended by the star when it covers a distance of one Parsec arc length, it is known as parallax angle

Here we can say

$angle = \frac{1 Parsec}{distance}$

so we have

$distance = \frac{1 Parsec}{angle}$

so here we have

angle subtended by Star A = 1 arc sec

angle subtended by star B = 0.75 arc sec

now we have

distance for star A is given as

$d_a = \frac{1 Parsec}{1} = 1 Parsec$

distance of star B is given as

$d_b = \frac{1 Parsec}{0.75} = 1.33 Parsec$

So star A is closer than star B

7 0

3 years ago

What are the two ways to keep us fit and healthy ??

AysviL [449]

Answer:

1)Eat healthy food

2)Exercise daily

3)Drink plenty of water

4)Get plenty of sleep

5)Do not take stress

6)Be hygienic

Explanation:

Hope it help Please mark me as brainlest

4 0

3 years ago

compare the arrangement of atoms or molecules in an amorphous solid to the arrangement of atoms or molecules in a crystalline so

Lisa [10]

The answer to the question asked above is that amorphous solid's atoms and molecules are not arranged in a definite lattice pattern, while crystalline are arranged definitely in a lattice pattern.

Hope my answer would be a great help for you. If you have more questions feel free to ask here at Brainly.

7 0

3 years ago