PHYSICS HIGH SCHOOL

If a car goes along a straight road heading west and speeds up from 25 ft/s to 60 ft/s in 5 s, calculate the acceleration.

Answers

Answer 1
Answer:
Acceleration  = 

         (change in speed) / (time for the change)
and
         direction of the change.

Change in speed = (end speed)-(start speed) = (60 - 25) = 35 f/s
Time for the change = 5 sec
Direction of the change = west

                 Acceleration  =  7 ft/sec² west .

Related Questions

A projectile has an initial horizontal velocity of 34.0 M/s at the edge of a roof top. Find the horizontal and vertical components of its velocity after 5.5sI need shown work !
If light photons are massless then why are they attracted by black holes?​
What is the mass of a person weighing 600 N?
When air is blown across the top of an openwater bottle, air molecules in the bottle vibrateat a particular frequency and sound is produced.This phenomenon is called(1) diffraction (3) resonance(2) refraction (4) the Doppler effect
PLEASE HELP 25 POINTS!!!! Multiply the following numbers and round your answer to the correct number of significant figures: 72,000 x 45Show both the unrounded and rounded answer.

A car that is initially moving to the right with a velocity of 4 m/s is pushed by a -5 N force as it moves from 5 meters to 20 meters. How much work is done to the car by this force?

Answers

Answer:

the work done on the car by the applied force is 75 J.

Explanation:

Given;

initial velocity of the car, v = 4 m/s

applied force in opposite direction, F = 5N

initial position of the car, x₀ = 5 m

final position of the car, x₁ = 20 m

displacement of the car, Δx = x₁ - x₀ = 20 m - 5m

                                                            = 15 m

The work done on the car by the applied force is calculated as follows;

W = F.Δx

W = 5 x 15

W = 75 J

Therefore, the work done on the car by the applied force is 75 J.

Brilliant***
Thank you

Answers

Given:

Mass of the Beaker = 12.023 g

Total Mass of the Beaker and the Ball = 23.050 g

To Find:

The Mass of the Ball.

Solution:

Total Mass of the Beaker and the Ball - Mass of the Beaker = Mass of the Ball

23.050 g - 12.023 g = 11.027 g

Answer:

The Mass of the Ball is 11.027 g

The current through a 10-ohm resistor connected to a 120-v power supply is

Answers

Answer:

12 A

Explanation:

Voltage, V = 120 V

Resistance, R  10 ohm

By using ohm's law

V = i x R

where, i is the current

i = V / R

i = 120 / 10

i = 12 A

thus, the current is 12 A.

Scientist infer that most of earth earliest atmosphere was produced by?

Answers

Scientists infer that most of Earth earliest atmosphere was produced by the escape of gases from Earth's molten surface. Once these gases were released from the very hot surface that covered the Earth, the earliest stages and levels of the atmosphere we know today were created. Many of those earliest gases still make up our atmosphere today.Hope this helps. Let me know if you need additional help!

Scientists infer that most of Earth earliest atmosphere was produced by the escape of gases from Earth's molten surface. Once these gases were released from the very hot surface that covered the Earth, the earliest stages and levels of the atmosphere we know today were created. Many of those earliest gases still make up our atmosphere today


Explanation:

Earth shaped through a method of accretion -collision of rocks and dirt particles, that step by step shaped a bigger and bigger object. These impacts generated loads of warmth, therefore early Earth would are a hot and desolate place. Vapour is assumed to own shaped a steam atmosphere, and incoming iron-rich rocks colliding with Earth would have reacted with a number of this water to provide rise to H gas.

What term refers to the total density of matter and energy needed to give the universe a "flat" geometry in spacetime?

Answers

I believe that inflation explains why the universe appears to be the same in all directions (isotropic), why the cosmic microwave background radiation is distributed evenly.

A wrench reduces the force needed to tighten a bolt. For this statement to be true, the wrench _____.

Answers

Answer:

Increases the input force and decreases the input distance

Explanation:

When a force is applied over a given distance, there is an inverse relationship between the applied force and distance. Example is a tommy bar, when the length increases the force required decreases. This principle is applied to this wrench.

It is B, I honestly didn't know

Other Questions
Scientific Inquiry incorporates many scientific methods.A) trueB) false
Ideally, rewards should be given immediately and frequently buta. only from an instructor or supervisor. b. in moderate amounts. c. without a specific timeline. d. shouldn’t match your personal tastes.
The alpha particles leave visible tracks in the cloud chamber becauseIonization by the alpha particle seeds the formation of clouds where the particle has passed.The kinetic energy of the alpha particles heats the air.The alpha particle is so energetic that it leaves a smoke trail behind.The alpha particle strikes nitrogen molecules and breaks them into atomic nitrogen.
Which formula correctly shows how to calculat the time taken, given the average velocity and the displacement