PHYSICS HIGH SCHOOL

"A car accelerates at a rate of 3.0 m/s2. If its original speed is 8.0 m/s, how many seconds will it take the car to reach a final speed of 23.0 m/s?"

Answers

Answer 1
Answer:

Answer:

\boxed{Time = t = 5 seconds}

Explanation:

Acceleration = (V_(f)-V_(i))/(t)

Where

Acceleration = 3 m/s²

V_(f) = 23 m/s

V_(i) = 8 m/s

So,

3 = (23-8)/(t)

t = (15)/(3)

Time = t = 5 seconds
Answer 2
Answer:

Answer:

.81 m second i think

Explanation:

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Answers

Answer:

Explanation:

D Distance and Mass

A person walks out of a store with a pillow at the top of an overflowing shopping cart. While walking to the car, the cart's wheel hits a large rock, causing the cart to suddenly stop. Which of the following is likely to happen as a result of Newton's first law of motion?

Answers

The pillow will continue to go forward as Newton's first law states that an object will continue in it's path unless another force acts upon it

A traveler first drives 18.6 km east, then 30.3 km southeast, and finally 10.7 km south. Find the traveler's total displacement ?

Answers

If a traveler first drives 18.6 km east, then 30.3 km southeast, and finally 10.7 km south then the traveler's total displacement would be 51.30 kilometers.

What is displacement?

An object's position changes if it moves in relation to a reference frame, such as when a passenger moves to the back of an airplane or a professor moves to the right in relation to a whiteboard. Displacement describes this shift in location.

As given in the problem If a traveler first drives 18.6 km east, then 30.3 km southeast, and finally 10.7 km south then we have to find the traveler's total displacement,

the total displacement in the east direction = 18.6 + 30.3Cos45°

the total displacement in the east direction = 40 km

the total displacement in the south direction = 10.7 + 30.3Cos45°

the total displacement in the south direction = 32.12 km

The net resultant displacement = √(40² + 32.12²)

The net resultant displacement = 51.30 kilometers

Thus, the traveler's total displacement comes out to be 51.30 kilometers.

Learn more about displacement here, refer to the link;

brainly.com/question/10919017

#SPJ2
East: 18.6+30.3/(sqrt2)
South: 19.7+30.3/(sqrt2)
Total displacement: sqrt(east^2+south^2) is 57.3 km

The use of oil or grease to lessen friction is called

Answers

They are called lubricants.

the 2,200 meters-per-second flux in an ordinary water reactor is 1 .5 x 1013 neutronsl cm2-sec. at what rate are the thermal neutrons absorbed by the water?

Answers

Answer:

bbkbo.om

Explanation:

you'll go go hi I go gfdd go jhhgg you out in FB kjjhbbbbbnmkjhvvvhjmkklbihoboblh LA n

Solve for r

F= k (m1m2/r^2)

Answers

F= k ( m _(1)m _(2))/(r^2) \n \n r\neq 0\n \n r^2F =k\cdot m _(1)m _(2) / :F \n \nr^2= (k\cdot m _(1)m _(2) )/(F)\n \nr = \sqrt{(k\cdot m _(1)m _(2) )/(F)}
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