A car traveling with constant speed travels 150 km in 7200s. What is the speed of the car?

Answers

Answer 1

Answer: Speed= distance/time
Speed= 150000m/7200s=20.83m/s(cor.to.2d.p.)

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During a phase change what happens to the temperature?

Answers

During a phase change the substance or objects temperature increases or decreases depending on which way they go, Solid to liquid to gas needs added heat which makes it an endothermic reaction. Gas to liquid to solid loses heat energy to slow down its particles this is an exothermic reaction.

The temperature either rises or falls during a state change.
Ex.
Melting from ice to water~ the temperature is rising.

OR

Ex.
From a gas to a liquid~ the temperature is falling.

Determine the conversion factor between (a) km/h and mi/h, (b) m/s and ft/s, and (c) km/h and m/s.

Answers

(a) km/h and mi/h,
1 km/hr (km hr-1) = 0.278 m/s (m s-1) = 0.621mi/hr (mi hr-1) = 0.912 ft/s (ft s-1)
(b) m/s and ft/s,
Speed of sound in air at 0 oC (32 oF)= 331 m/s (m s-1) = 1090 ft/s (ft s-1) =41 mi/hr (mi hr-1)
(c) km/h and m/s. 1km/hr (km hr-1) = 0.278 m/s (m s-1)

(a) 1 mi/h = 1.60934 km/h

(b) 1 ft/s = 0.3048 m/s

(c) 1 m/s = 3.6 km/h

Further explanation

Acceleration is rate of change of velocity.

$\large {\boxed {a = (v - u)/(t) } }$

$\large {\boxed {d = (v + u)/(2)~t } }$

a = acceleration ( m/s² )

v = final velocity ( m/s )

u = initial velocity ( m/s )

t = time taken ( s )

d = distance ( m )

Let us now tackle the problem !

$1 ~ foot = 30.48 ~ cm$

$1 ~ inch = 2.54 ~ cm$

$1 ~ foot = 12 ~ inches$

$1 ~ mile = 1609.34 ~ metres$

Question (a):

$1 ~ mi/h = (1 ~ miles)/(1 ~ hour)$

$1 ~ mi/h = (1.60934 ~ km)/(1 ~ hour)$

$\large {\boxed {1 ~ mi/h = 1.60934 ~ km/h} }$

Question (b):

$1 ~ ft/s = (1 ~ foot)/(1 ~ s)$

$1 ~ ft/s = (0.3048 ~ m)/(1 ~ s)$

$\large {\boxed {1 ~ ft/s = 0.3048 ~ m/s} }$

Question (c):

$1 ~ m/s = (1 ~ m)/(1 ~ s)$

$1 ~ m/s = (1/1000 ~ km)/(1/3600 ~ h)$

$1 ~ m/s = (3600)/(1000) ~ km/h$

$\large {\boxed {1 ~ m/s = 3.6 ~ km/h} }$

Learn more

Velocity of Runner : brainly.com/question/3813437
Kinetic Energy : brainly.com/question/692781
Acceleration : brainly.com/question/2283922
The Speed of Car : brainly.com/question/568302

Answer details

Grade: High School

Subject: Physics

Chapter: Kinematics

Keywords: Velocity , Driver , Car , Deceleration , Acceleration , Obstacle , Speed , Time , Rate

A car travels at a consant speed of 18.0m/s for 10.8s.
Determine all unknowns.

Answers

1. Distance: The car traveled a distance of 194.4 meters.
2. Displacement: The displacement is also 194.4 meters.
3. Velocity: The velocity of the car is
18.0 m/S.
4. Acceleration: The acceleration is O

What is the total displacement of a bee that flies 2 meters east, 5 meters north, and 3 meters east? explain how you did it

Answers

The displacement covered by the bee that flies 2 meters east, 3 meters east, and 5 meters north is 7.05 meters.

What is Displacement?

Displacement of an object can be defined as the actual change in the position of an object. It is a vector quantity because it has both the direction and the magnitude.

The bee travels 2 meter east and 3 meters east. Therefore, the total distance covered in the east direction is (2+3) meters = 5 meters.

The bee travels 5 meters in the north direction. This makes a square of 5 meters dimension and in this condition, the displacement covered by the bee will be the diagonal of the square. Therefore, the total displacement of the bee can be calculated as:

Diagonal of square = $√(2)$ a

where, a = side of the square

Side of the square = 5 meters

Diagonal of the square = $√(2)$ × 5

$√(2)$ = 1.41

Therefore, diagonal = 1.41 × 5

Displacement of the bee = 7.05 meters

Learn more about Displacement here:

brainly.com/question/11934397

#SPJ2

It flies 2+3meters east and 5 meters north so it flies 5 east and 5 north. Then the way of it would be diagonal of 5x5 square it equals 5√2 which is 7.07.

If an object is not accelerating what can you determine about the sum of all the forces on the object

Answers

If object is not accelerating, the sum of all forces on the object will be equal to ZERO...

A metal box, attached to a small parachute, is dropped from a helicopter. explain in terms of the forces acting; why:(i) its velocity increased immediately after being dropped
(ii) it reached a uniform velocity after a short time

Answers

(i) because there's gravity force pulling it downwards.

(ii) because the force on the metal box is gone (either it has landed on the ground or something else happened) that means that the metal box is no longer moving but it has constant velocity/uniform velocity.

I'm sorry if it's wrong but that's how I see it

Answer:

Explanation:

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