If you are talking about volume, then an easy way to measured the volume of a liquid would be with a graduated cylinder. A graduated cylinder is marked with volume units such as milliliter (mL) or the liter (L). One liter equals 1 thousand milliliters.
To measure the volume of a solid you use the formula V = (Length)(Width)(Height)
To measure the volume of a gas you use a graduated cylinder held upside down. At first the cylinder is filled with water. When air is blown into the cylinder, bubbles rise and push some water down. The volume of the water pushed down is equal to the volume of the gas that was blown in.
We don't know if the road is perfectly straight between the intersections, or if the road bends, curves, or turns between them. So we don't have enough information to calculate the displacement between them.
But we can calculate the distance the car traveled between them.
Distance = (speed) (time)
Distance = (20 m/s) (120 s)
Distance = 2,400 meters
Answer:
Ruler/tape and stopwatch
Weighing balance
Explanation:
Since for momentum, we're concerned with mainly mass and velocity of an object then you will need weighing balance calibrated with the most accurate unit (normally grams or kilograms). The weighing balance will therefore be useful in measuring mass. To obtain velocity, you need to get distance that an object moves and divide it by time taken for the movement. Therefore, a tape or rule will be useful in measuring distance moved in meters while stopwatch will help you get time taken which consequently you use to get velocity.
B. 3 g/L in weight
C. 15 m/s2
D. 10 km/hr eastward
Velocity of a moving body is its distance covered by time. Thus, it has the unit of m/s, km/hr. etc. . Therefore, among the given options, 25 m/s and 10 km/hr. are represents a velocity.
Velocity is a physical quantity having both direction and magnitude. Thus, it is a vector quantity and it measures the distance covered by an object per unit time.
Velocity is the ratio of distance to the time, hence its units are m/s, km/hr etc. The rate of change in velocity is called acceleration. Thus acceleration is change in velocity by change in time. Thus, its unit is m/s². Hence, 15 m/s² represents acceleration.
The quantity 3 g/L represents the mass per volume and hence it is density of a substance or can be the concentration of a solution. Thus, options A and D are correct.
To find more on velocity, refer here:
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Answer:A
Explanation:
It’s A because the velocity is measured in m/s