50. kilometers during the next 0.50 hour, and
40. kilometers in the final 0.50 hour. What is the
car’s average speed for the entire trip?
(1) 45 km/h (3) 85 km/h
(2) 60. km/h (4) 170 km/h
The average speed of the car for the entire trip can be calculate by using:
where S is the total distance covered by the car, and t is the total time taken.
The total distance travelled by the car is:
while the total time taken is:
so, the average speed of the car is:
so, the correct answer is (3) 85 km/h.
The average speed of the car for entire trip is .
Further Explanation:
Speed is the measure of a quantity of an object the tells how fast the object is moving in the other words we can define the speed that it is the distance covered by an body divided by the time taken to cover that distance. It is a quantity with only magnitude so it is a scalar quantity.
The average speed is defined as the sum of all the distance traveled by the body divided by the sum of time taken to travel that distance.
Given:
The distance travel by the car is for .
The distance travel by the car is for .
The distance travel by the car is for .
.
Concept:
The expression for the average can be written as:
S = …… (1)
The distance travel by the car is for , distance travel by the car is for and distance travel by the car is for .
The sum of the distance is:
The sum of time taken to travel the distance is:
Substitute for total distance and for total time in equation (1).
Therefore, the average speed of the car for entire trip is .
Learn more:
1. Find the net force. https://brainly.in/question/8668644
2. Find the velocity. https://brainly.in/question/4502003
3. Calculate average speed brainly.com/question/11597590
Answer Details:
Grade: Middle school
Subject: Physics
Chapter: Kinematics
Keywords:
Highway, car, driven, 80 km, 1.00 hour, 1.00 hr, 1.00 h, 50 km, 0.50 hour, 0.50 hr, 0.50 h, 50 km, average speed, entire, trip, 85 km/hr.
c. charge
b. position.
d. mass.
It is impossible to determine the exact position and momentum of electron simultaneously. Therefore, option B is the correct answer.
According to Heisenberg’s uncertainty principle,it is impossible to determine simultaneously, the exact position and momentum of an electron.
Mathematical expression
ΔX.ΔP ≥ h/4π
ΔX = uncertainty in position
ΔP = uncertainty in momentum
h = Plank’s constant
π= Pi
Thus, we can conclude its nearly impossible to determine electron’s exact position. Therefore, option B is the correct answer.
Learn more about uncertainty principle here:
https://brainly.in/question/10474600
The correct answer that is actually listed would be (B) I know this because I did it on my test and the other answer on this was not helpful at all.