We can determine the speed of an object with only a tape measure and a stopwatch first by measuring the distance traveled by any given body and simultaneously measuring the time taken to cover this distance with the help of the stopwatch
The total distance covered by any object per unit of time is known as speed. It depends only on the magnitude of the moving object. The unit of speed is meter/second. The generally considered unit for speed is a meter per second.
The mathematical expression for speed is given by
speed = total distance /Total time
Suppose a body travels a total distance of 750 meters in a total time of 75 seconds, we can measure this distance with the help of a tape measure and the time with the help of a stopwatch its speed would be 4 meters/seconds
speed = distance measured by tape measure /stopwatch time
= 750/75
= 10 m/s
Thus, we can determine the speed of an object with only a tape measure and a stopwatch
Learn more about speed from here
#SPJ2
-The momentum of player A is greater than that of player B.
-The momentum of player A is less than that of player B.
Answer:
the momentum of player A is greater than player B.
Therefore, Option 2 is correct.
Step-by-Step explanation:
We have been given the velocity of the players and mass of the players.
Player A:
Velocity is 5m/hr
Mass 210 pounds
Player B:
Velocity is 3m/hr
Mass 190 pounds
We have a formula for momentum:
p is momentum
m is mass
v is velocity
We will find momentums for both the players:
Momentum of player A:
on substituting the values we get:
Momentum of player B:
on substituting the values we get:
Hence, the momentum of player A is greater than player B.
Therefore, Option 2 is correct.
The equation for momentum is p = mv where p is the omentum, m is the mass and v is the velocity. Calculating the momentum for each football player, player A will have a momentum of 1050 lb-mi/h and player B will have a momentum of 570 lb-mi/h. Therefore, momentum of player A is greater than that of player B.
b. compounds
c. homogeneous mixtures
d. colloids
one pulls with a force of 515 N at an angle
of 31◦ with respect to the direction in which
the truck is headed, while the other car pulls
with a force of 926 N at an angle of 25◦ with
respect to the same direction. What is the net forward force exerted on
the truck in the direction it is headed?
B. Do people look better when they have a suntan?
C. What is the most enjoyable time to be in the sun?
D. Should children be allowed to lie in the sun?
Out of the options the one that can be tested is: A) Does being in the sun make your skin dry?
As it can be seen that the results of the other options in the question can vary from person to person. As some might find suntan attractive and some might not. Similarly, some might enjoy the morning time sun whereas some might enjoy the sun in the evening. And in the last option, it is hard to conclude whether children might lie in the sun or not as it merely depends on the individual's resistance power to the sunlight.
Therefore, the correct option is(A).
Learn more about the effects of sunlight on:brainly.com/question/1673834
A. Does being in the sun make your skin dry?
You can test this by putting people in the Sun and seeing hop much dryer their skin is than when they're not in the Sun.
B. The field gets weaker.
C. The field changes direction.
D. The field disappears completely.
Answer: The correct answer is option (B).
Explanation:
The current carrying wire produces the magnetic field around it. More the current in the wire, stronger will be the magnetic strength around the wire. The magnetic field is stronger near this wire.
The direction of the magnetic field depends on the direction of the current.
In the given problem, Linus builds an electrical circuit with a battery and with wires that carry the current.The strength of the magnetic field depends on the amount of current flowing in the wire. As the battery weakens, the current also weakens.
Therefore, the magnetic field around the wires is weaker.
The magnetic field getting weaker is the correct answer when Linus builds an electrical circuit with a battery and with wires that carry the current. The correct answer is (B).
The strength of the magnetic field around the wires is directly proportional to the current flowing through the wires. As the battery weakens and the current decreases, the magnetic field strength around the wires also decreases.
Conversely, if the current increases, the magnetic field strength increases. This relationship is described by Ampere's law and the right-hand rule, which state that the magnetic field is directly proportional to the current.
Therefore, The correct answer is (B). The magnetic field getting weaker is the correct answer.
To know more about the magnetic field:
#SPJ6